Items where Author is "Vairamani , M."
Group by: Item Type | No Grouping Jump to: Article Number of items: 139. ArticleKarthikraj, R. ; Prabhakar, S. ; Vairamani, M. (2012) Differentiation of enantiomeric drugs by iodo-substituted L-amino acid references under electrospray ionization mass spectrometric conditions Rapid Communications in Mass Spectrometry, 26 (11). pp. 1385-1391. ISSN 0951-4198 Chary, Naresh V. ; Kumar, Dinesh Ch. ; Vairamani, M. ; Prabhakar, S. (2012) Characterization of amino acid-derived betaines by electrospray ionization tandem mass spectrometry Journal of Mass Spectrometry, 47 (1). pp. 79-88. ISSN 1076-5174 Vairamani, M. ; Prabhakar, S. (2012) Mass spectrometry in India European Journal of Mass Spectrometry, 18 (1). pp. 1-35. ISSN 1469-0667 Sravani, M. ; Nagaveni, V. ; Prabhakar, S. ; Vairamani, M. (2011) G-Quadruplex formation of deoxyguanosine in the presence of alkaline earth metal ions studied by electrospray ionization mass spectrometry Rapid Communications in Mass Spectrometry, 25 (14). pp. 2095-2098. ISSN 0951-4198 Parthasarathy, G. ; Vairamani, M. (2011) Testing for fullerenes in geologic materials: oklo carbonaceous substances, karelian shungites, sudbury black tuff: comment and reply Geology, 31 (1). e32-e33. ISSN 0091-7613 Sridhar, L. ; Karthikraj, R. ; Murty, M. R. V. S. ; Prasada Raju, N. ; Vairamani, M. ; Prabhakar, S. (2011) Mass spectral analysis of N-oxides of chemical weapons convention related aminoethanols under electrospray ionization conditions Rapid Communications in Mass Spectrometry, 25 (4). pp. 533-542. ISSN 0951-4198 Murty, M. R. V. S. ; Prasada Raju, N. ; Prabhakar, S. ; Vairamani, M. (2010) Chemical ionization mass spectral analysis of pinacolyl alcohol and development of derivatization method using p-tolyl isocyanate Analytical Methods, 2 (10). pp. 1599-1605. Murty, M. R. V. S. ; Sridhara Chary, N. ; Prabhakar, S. ; Prasada Raju, N. ; Vairamani, M. (2009) Simultaneous quantitative determination of Sudan dyes using liquid chromatography-atmospheric pressure photoionization-tandem mass spectrometry Food Chemistry, 115 (4). pp. 1556-1562. ISSN 0308-8146 Kumari, S. ; Prabhakar, S. ; Vairamani, M. (2008) Halogen-substituted phenylalanines as enantioselective selectors for enantioselective discrimination of amino acids: effect of halogen Rapid Communications in Mass Spectrometry, 22 (9). pp. 1393-1398. ISSN 0951-4198 Chattopadhyay, D. K. ; Prasada Raju, N. ; Vairamani, M. ; Raju, K. V. S. N. (2008) Structural investigations of polypropylene glycol (PPG) and isophorone diisocyanate (IPDI) based polyurethane prepolymer by matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF)-mass spectrometry Progress in Organic Coatings, 62 (2). pp. 117-122. ISSN 0300-9440 Parthasarathy, G. ; Bhandari, N. ; Vairamani, M. ; Kunwar, A. C. (2008) High-pressure phase of natural fullerene C60 in iridium-rich Cretaceous-Tertiary boundary layers of Deccan intertrappean deposits, Anjar, Kutch, India Geochimica et Cosmochimica Acta, 72 (3). pp. 978-987. ISSN 0016-7037 Sivaleela, T. ; Ravi Kumar, M. ; Prabhakar, S. ; Bhaskar, G. ; Vairamani, M. (2008) Chiral discrimination of α-amino acids by DNA tetranucleotides under electrospray ionization conditions Rapid Communications in Mass Spectrometry, 22 (2). pp. 204-210. ISSN 0951-4198 Choudhury, Joyanta ; Sinha, Pradipta ; Prabhakar, S. ; Vairamani, M. ; Roy, Sujit (2008) Selenophilicity of copper in selenium-carbon bond formation from selenous acid using Cu(II)/Sn(II) reagent Phosphorus, Sulfur, and Silicon and the Related Elements, 183 (12). pp. 2943-2955. ISSN 1042-6507 Lakshmi, V. V. S. ; Prabhakar, S. ; Murty, M. R. V. S. ; Vairamani, M. (2007) Electrospray ionization mass spectral studies of N,N-dialkylaminoethane-2-sulphonic acids Rapid Communications in Mass Spectrometry, 21 (23). pp. 3937-3945. ISSN 0951-4198 Chattopadhyay, Amitabha ; Paila, Yamuna Devi ; Jafurulla, Md. ; Chaudhuri, Arunima ; Singh, Pushpendra ; Murty, M. R. V. S. ; Vairamani, M. (2007) Differential effects of cholesterol and 7-dehydrocholesterol on ligand binding of solubilized hippocampal serotonin1A receptors: implications in SLOS Biochemical and Biophysical Research Communications, 363 (3). pp. 800-805. ISSN 0006-291X Bhaskar, G. ; Prabhakar, S. ; Ramanjaneyulu, G. S. ; Vairamani, M. ; Srinivasu, V. N. V. ; Srinivas, K. (2007) Mass spectral studies of meso-dialkyl, alkyl aryl and cycloalkyl calix(4)pyrroles under positive and negative ion electrospray ionization conditions Journal of Mass Spectrometry, 42 (9). pp. 1194-1206. ISSN 1076-5174 Ramanjaneyulu, G. S. ; Prabhakar, S. ; Bhaskar, G. ; Vairamani, M. ; Yadav, J. S. ; Murty, Ch. V. S. R. ; Soujanya, Y. ; Narahari Sastry, G. (2007) Differentiation of diastereomeric conduramine derivatives under electron ionization and chemical ionization mass spectral conditions Rapid Communications in Mass Spectrometry, 21 (4). pp. 579-588. ISSN 0951-4198 Muralidhara Rao, B. ; Saradhi, U. V. R. V. ; Shobha Rani, N. ; Prabhakar, S. ; Prasad, G. S. V. ; Ramanjaneyulu, G. S. ; Vairamani, M. (2007) Identification and quantification of methyl nicotinate in rice (Oryza sativa L.) by gas chromatography-mass spectrometry Food Chemistry, 105 (2). pp. 736-741. ISSN 0308-8146 Afzal, Jalees ; Vairamani, M. ; Hazra, B. C. ; Das, K. C. (2006) A novel thermal Knoevenacel condensation via a thermal Michael reaction Synthetic Communications, 10 (11). pp. 843-850. ISSN 0039-7911 Bhaskar, G. ; Prabhakar, S. ; Ravi Kumar, M. ; Narsimhaji, Ch. V. ; Srinivas, K. ; Vairamani, M. (2006) Characterisation of a series of acetals/ketals of bis(2-nitrophenyl) ethanediol and bis(4,5-dimethoxy-2-nitrophenyl) ethanediol under APCI mass spectrometric conditions Journal of Mass Spectrometry, 41 (12). pp. 1608-1614. ISSN 1076-5174 Ramanjaneyulu, G. S. ; Prabhakar, S. ; Bhaskar, G. ; Vairamani, M. ; Naveen Kumar, D. ; Venkateswara Rao, B. (2006) Mass spectral differentiation of diastereomeric hydroxybrevicomins by electron ionization Rapid Communications in Mass Spectrometry, 20 (19). pp. 2990-2994. ISSN 0951-4198 Vijaya Saradhi, U. V. R. ; Prabhakar, S. ; Jagadeshwar Reddy, T. ; Vairamani, M. (2006) Ion-pair solid-phase extraction and gas chromatography-mass spectrometric determination of acidic hydrolysis products of chemical warfare agents from aqueous samples Journal of Chromatography A, 1129 (1). pp. 9-13. ISSN 0021-9673 Lakshmi, V. V. S. ; Jagadeshwar Reddy, T. ; Murty, M. R. V. S. ; Prabhakar, S. ; Vairamani, M. (2006) In situ nucleophilic substitution reaction of N,N-dialkylaminoethyl-2-chlorides monitored by gas chromatography/mass spectrometry Rapid Communications in Mass Spectrometry, 20 (14). pp. 2209-2214. ISSN 0951-4198 Lakshmi, V. V. S. ; Murty, M. R. V. S. ; Jagadeshwar Reddy, T. ; Ravikumar, M. ; Prabhakar, S. ; Vairamani, M. (2006) Electrospray ionisation mass spectral studies on hydrolysed products of sulfur mustards Rapid Communications in Mass Spectrometry, 20 (6). pp. 981-986. ISSN 0951-4198 Kiran Kumar, M. ; Sateesh, B. ; Prabhakar, S. ; Narahari Sastry, G. ; Vairamani, M. (2006) Generation of regiospecific carbanions under electrospray ionisation conditions and their selectivity in ion-molecule reactions with CO2 Rapid Communications in Mass Spectrometry, 20 (6). pp. 987-993. ISSN 0951-4198 Kiran Kumar, M. ; Prabhakar, S. ; Ravi Kumar, M. ; Vairamani, M. (2006) Auxiliary approach to evaluate the isomeric decarboxylated anions from 2-, 3- and 4-sulfobenzoates in the gas phase by using ion-molecule reactions with carbon dioxide in the collision cell Rapid Communications in Mass Spectrometry, 20 (6). pp. 1045-1048. ISSN 0951-4198 Jagadeshwar Reddy, T. ; Prabhakar, S. ; Ravi Kumar, M. ; Vijaya Saradhi, U. V. R. ; Vairamani, M. (2006) Mass spectral studies of a series of N,N-dialkyl aminoethyl-2-chlorides and trimethyl silyl ethers of N,N-dialkyl aminoethane-2-ols under electron impact conditions Journal of Mass Spectrometry, 41 (1). pp. 59-70. ISSN 1076-5174 Bhaskar, G. ; Prabhakar, S. ; Narsaiah, Venkat A. ; Nagaiah, K. ; Ramanjaneyulu, G. S. ; Vairamani, M. (2006) Differentiation of isomeric substituted diaryl ethers by electron ionization and chemical ionization mass spectrometry Rapid Communications in Mass Spectrometry, 12 (3). pp. 161-170. ISSN 0951-4198 Chandra Sekhar, K. ; Chary, N. S. ; Kamala, C. T. ; Vairamani, M. ; Anjaneyulu, Y. ; Balaram, V. ; Erik Sorlie, Jan (2006) Environmental risk assessment studies of heavy metal contamination in the industrial area of Kattedan, India- a case study Human and Ecological Risk Assessment, 12 (2). pp. 408-422. ISSN 1080-7039 Kumar, Ravi M. ; Prabhakar, S. ; Reddy, Jagadeshwar T. ; Vairamani, M. (2006) Generation of alkoxide anions from a series of aliphatic diols and alcohols and their ion-molecule reactions with carbon dioxide in the gas phase European Journal of Mass Spectrometry, 12 (1). pp. 19-24. ISSN 1469-0667 Ravi Kumar, M. ; Prasada Raju, N. ; Jagadeshwar Reddy, T. ; Narahari, A. ; Janaki Ram Reddy, Maruti ; Vairamani, M. (2005) Evaluation of methyl 3-(4-methoxy-1-naphthyl)-(E)-2-propenoate and methyl 5-(4-methoxy-1-naphthyl)-(2E,4E)-2,4-pentadienoate as new charge-transfer matrices for matrix-assisted laser desorption/ionization mass spectrometry Rapid Communications in Mass Spectrometry, 19 (21). pp. 3171-3174. ISSN 0951-4198 Abhyankar, Gauri ; Reddy, V. D. ; Giri, C. C. ; Rao, K. V. ; Lakshmi, V. V. S. ; Prabhakar, S. ; Vairamani, M. ; Thippeswamy, B. S. ; Bhattacharya, P. S. (2005) Amplified fragment length polymorphism and metabolomic profiles of hairy roots of Psoralea corylifolia L. Phytochemistry, 66 (20). pp. 2441-2457. ISSN 0031-9422 Bhaskar, G. ; Adharvana Chary, M. ; Kiran Kumar, M. ; Syamasundar, K. ; Vairamani, M. ; Prabhakar, S. (2005) Electrospray ionization studies of transition-metal complexes of 2-acetylbenzimidazolethiosemicarbazone using collision-induced dissociation and ion-molecule reactions Rapid Communications in Mass Spectrometry, 19 (11). pp. 1536-1544. ISSN 0951-4198 Murty, M. R. V. S. ; Prabhakar, S. ; Lakshmi, V. V. S. ; Vijaya Saradhi, U. V. R. ; Jagadeshwar Reddy, T. ; Vairamani, M. (2005) Mass spectral analysis of chloropicrin under negative ion chemical ionization conditions Analytical Chemistry, 77 (10). pp. 3406-3410. ISSN 0003-2700 Ravi Kumar, M. ; Prabhakar, S. ; Nagaveni, V. ; Vairamani, M. (2005) Estimation of gas-phase acidities of a series of dicarboxylic acids by the kinetic method Rapid Communications in Mass Spectrometry, 19 (8). pp. 1053-1057. ISSN 0951-4198 Vairamani, M. ; Siva Kumar, K. V. ; Viswanadha Rao, G. K. (2005) Acetone chemical ionization studies: olefins Organic Mass Spectrometry, 25 (7). pp. 363-367. ISSN 0030-493X Vairamani, M. (2005) Transannular interaction in the gas phase Rapid Communications in Mass Spectrometry, 5 (1). pp. 35-36. ISSN 0951-4198 Vairamani, M. ; Saraswathi, M. (2005) Negative ion chemical ionization (Br-) mass spectra of dicarboxylic acids Organic Mass Spectrometry, 24 (5). pp. 355-356. ISSN 0030-493X Ramana, D. V. ; Vairamani, M. (2005) Ortho effects in organic molecules on electron impact. IV-Ortho interaction of the carboxyl group with the olefinic bond in substituted benzoic acids Organic Mass Spectrometry, 11 (5). pp. 525-528. ISSN 0030-493X Ravi Kumar, M. ; Prabhakar, S. ; Kiran Kumar, M. ; Jagadeshwar Reddy, T. ; Vairamani, M. (2005) Dissociation of gas-phase dimeric complexes of lactic acid and transition-metal ions formed under electrospray ionization conditions; the role of reduction of the metal ion Rapid Communications in Mass Spectrometry, 19 (2). pp. 113-120. ISSN 0951-4198 Kiran Kumar, M. ; Srinivasa Rao, J. ; Prabhakar, S. ; Vairamani, M. ; Narahari Sastry, G. (2005) The effect of spacer chain length on ion binding to bidentate a,ω-diamines: Contrasting ordering for H+ and Li+ ion affinities Chemical Communications (11). pp. 1420-1422. ISSN 1359-7345 Prabhakar, S. ; Radha Kishan, M. ; Mirza, S. P. ; Raghavan, K. V. ; Vairamani, M. (2004) Mass spectral study of meso-alkyl and meso-cycloalkyl calix(4)pyrroles under electron impact conditions Rapid Communications in Mass Spectrometry, 18 (18). pp. 2077-2086. ISSN 0951-4198 Mirza, Shama P. ; Raju, Prasada N. ; Madhavendra, S. S. ; Vairamani, M. (2004) 5-Amino-2-mercapto-1,3,4-thiadiazole :a new matrix of choice for the efficient matrix-assisted laser desorption/ionization of neutral carbohydrates Rapid Communications in Mass Spectrometry, 18 (14). pp. 1666-1674. ISSN 0951-4198 Jagadeshwar Reddy, T. ; Vijaya Saradhi, U. V. R. ; Prabhakar, S. ; Vairamani, M. (2004) Trace level detection and identification of chemicals related to the chemical weapons convention from complex organic samples Journal of Chromatography A, 1038 (1-2). pp. 225-230. ISSN 0021-9673 Kumar, Palani M. ; Vairamani, M. ; Raju, Prasada N. ; Lobo, Charmaine ; Anbumani, N. ; Kumar, Girish C. P. ; Menon, Thangam ; Shanmugasundaram, S. (2004) Rapid discrimination between strains of beta haemolytic streptococci by intact Cell mass spectrometry Indian Journal of Medical Research, 119 (6). pp. 283-288. ISSN 0971-5916 Kiran Kumar, M. ; Prabhakar, S. ; Ravi Kumar, M. ; Jagadeshwar Reddy, T. ; Premsingh, S. ; Rajagopal, S. ; Vairamani, M. (2004) Coordination chemistry of chromium-salen complexes studied by electrospray ionization mass spectrometry Rapid Communications in Mass Spectrometry, 18 (10). pp. 1103-1108. ISSN 0951-4198 Ravi Kumar, M. ; Prabhakar, S. ; Kiran Kumar, M. ; Jagadeshwar Reddy, T. ; Vairamani, M. (2004) Negative ion electrospray ionization mass spectral study of dicarboxylic acids in the presence of halide ions Rapid Communications in Mass Spectrometry, 18 (10). pp. 1109-1115. ISSN 0951-4198 Nagaveni, V. ; Prabhakar, S. ; Vairamani, M. (2004) Differentiation of underivatized diastereomeric hexosamine monosaccharides and their quantification in a mixture using the kinetic method under electrospray ionization conditions Analytical Chemistry, 76 (13). pp. 3505-3509. ISSN 0003-2700 Mirza, Shama P. ; Prasada Raju, N. ; Madhavendra, S. S. ; Vairamani, M. (2004) 5-Amino-2-mercapto-1,3,4-thiadiazole: a new matrix for the efficient matrix-assisted laser desorption/ionization of neutral carbohydrates Rapid Communications in Mass Spectrometry, 18 (14). pp. 1666-1674. ISSN 0951-4198 Chandra Sekhar, K. ; Kamala, C. T. ; Chary, N. S. ; Sastry, A. R. K. ; Nageswara Rao, T. ; Vairamani, M. (2004) Removal of lead from aqueous solutions using an immobilized biomaterial derived from a plant biomass Journal of Hazardous Materials, 108 (1-2). pp. 111-117. ISSN 0304-3894 Jagadeshwar Reddy, T. ; Prabhakar, S. ; Vijaya Saradhi, U. V. R. ; Jayathirtha Rao, V. ; Vairamani, M. (2004) Mass spectral study on O,O-dialkyl N,N-dialkyl phosphoramidates under electron impact conditions Journal of The American Society for Mass Spectrometry, 15 (4). pp. 547-557. ISSN 1044-0305 Parveen Mirza, Shama ; Prasada Raju, N. ; Vairamani, M. (2004) Estimation of the proton affinity values of fifteen matrix-assisted laser desorption/ionization matrices under electrospray ionization conditions using the kinetic method Journal of the American Society for Mass Spectrometry, 15 (3). pp. 431-435. ISSN 1044-0305 Mirza, S. P. ; Krishna, P. ; Prabhakar, S. ; Vairamani, M. ; Giblin, D. ; Gross, Michael L. (2003) The kinetic method reveals secondary deuterium isotope effects on the proton affinity and gas-phase basicity of glycine and alanine methyl esters International Journal of Mass Spectrometry, 230 (2-3). pp. 175-183. ISSN 1387-3806 Chakraborty, T. K. ; Srinivasu, P. ; Bikshapathy, E. ; Nagaraj, R. ; Vairamani, M. ; Kiran Kumar, S. ; Kunwar, A. C. (2003) Cyclic homooligomers of furanoid sugar amino acids Journal of Organic Chemistry, 68 (16). pp. 6257-6263. ISSN 0022-3263 Kulshrestha, U. C. ; Kulshrestha, Monika J. ; Sekar, R. ; Sastry, G. S. R. ; Vairamani, M. (2003) Chemical characteristics of rainwater at an urban site of South-central India Atmospheric Environment, 37 (21). pp. 3019-3026. ISSN 1352-2310 Kulshrestha, Monika J. ; Kulshrestha, Umesh C. ; Parashar, D. C. ; Vairamani, M. (2003) Estimation of SO4 contribution by dry deposition of SO2 onto the dust particles in India Atmospheric Environment, 37 (22). pp. 3057-3063. ISSN 1352-2310 Voleti, Nagaveni ; Vairamani, M. (2003) Proton affinity differences among three N-acetylhexosamines studied by the kinetic method Rapid Communications in Mass Spectrometry, 17 (10). pp. 1089-1091. ISSN 0951-4198 Jagadeshwar Reddy, T. ; Mirza, Shama P. ; Vijaya Saradhi, U. V. R. ; Jayathirtha Rao, V. ; Vairamani, M. (2003) Mass spectral studies of N,N-dialkylaminoethanols Rapid Communications in Mass Spectrometry, 17 (7). pp. 746-752. ISSN 0951-4198 Sekar, R. ; Ravi Prasad, P. ; Vairamani, M. (2003) Determination of acetyl salicylic acid and related impurities in pharmaceutical prepartations and bulk drugs by capillary electrophoresis Indian Journal of Chemical technology, 10 . pp. 603-606. ISSN 0971-457X Vairamani, M. ; Gross, Michael L. (2003) G-Quadruplex formation of Thrombin Binding Aptamer detected by Electrospray Ionization Mass Spectrometry Journal of American Chemical Society, 125 (1). pp. 42-43. ISSN 0002-7863 Nair, Vijay ; Treesa, P. M. ; Rath, Nigam P. ; Kunwar, A. C. ; KiranKumar, K. S. ; RaviSankar, A. ; Vairamani, M. ; Prabhakar, S. (2002) Dipolar cycloaddition of carbonyl ylides to 2-oxoindolinylidenes: a facile approach towards the synthesis of functionalized spiroindolenins Tetrahedron, 58 (36). pp. 7221-7231. ISSN 0040-4039 Nair, Vijay ; Mathew, Bini ; Menon, Rajeev S. ; Mathew, Saumini ; Vairamani, M. ; Prabhakar, S. (2002) [4+2] Cycloaddition reactions of o-thioquinones with pentafulvenes: efficient synthesis of benzoxathiins Tetrahedron, 58 (16). pp. 3235-3241. ISSN 0040-4020 Reddy, G. ; Prakash, J. ; Vairamani, M. ; Prabhakar, S. ; Matsumoto, G. ; Shivaji, S. (2002) Planococcus antarcticus and Planococcus psychrophilus spp. nov. isolated from cyanobacterial mat samples collected from ponds in Antarctica Extremophiles, 6 (3). pp. 253-261. ISSN 1431-0651 Ranganathan, S. ; Muraleedharan, K. M. ; Vairamani, M. ; Kunwar, A. C. ; Ravi Sankar, A. (2002) Unusual cyclo-tetra and hexa peptidation of bis-boc-cystine with cystine-di-OMe: one step preparation of the novel 32- and 48-membered cyclotetracystine and cyclohexacystine Chemical Communications (4). pp. 314-315. ISSN 1359-7345 Prabhakar, S. ; Kar, Paramita ; Mirza, S. P. ; Lakshmi, V. V. S. ; Nagaiah, K. ; Vairamani, M. (2001) Mass spectral study of O- and S-aryl dimethylthiocarbamates under electron impact conditions: Newman-Kwart rearrangement in the gas phase Rapid Communications in Mass Spectrometry, 15 (22). pp. 2127-2134. ISSN 0951-4198 Radha Kishan, M. ; Srinivas, N. ; Raghavan, K. V. ; Kulkarni, S. J. ; Sarma, J. A. R. P. ; Vairamani, M. (2001) A novel, shape-selective, zeolite-catalyzed synthesis of calix(4) pyrroles Chemical Communication (21). pp. 2226-2227. ISSN 1359-7345 Ranganathan, Subramania ; Muraleedharan, K. M. ; Chandrashekhar Rao, C. H. ; Vairamani, M. ; Karle, Isabella L. ; Gilardi, Richard D. (2001) Stacking of a benzenehexacarboxylic acid core in the crystal structure of benzenehexacarboxylic acid α-aminomethyl isobutyrate amide (MA-Aib6)-sodium nitrate complex Chemical Communications (24). pp. 2544-2545. ISSN 1359-7345 Nair, Vijay ; Mathew, Bini ; Rath, Nigam P. ; Vairamani, M. ; Prabhakar, S. (2001) Hetero Diels–Alder reactions of o-thioquinones with cyclic dienes: an efficient synthesis of novel heterocyclic compounds Tetrahedron, 57 (39). pp. 8349-8356. ISSN 0040-4020 Prasada Raju, N. ; Mirza, Shama P. ; Vairamani, M. ; Raghu Ramulu, A. ; Pardhasaradhi, M. (2001) 5-Ethyl-2-mercaptothiazole as matrix for matrix-assisted laser desorption/ionization of a broad spectrum of analytes in positive and negative ion mode Rapid Communications in Mass Spectrometry, 15 (19). pp. 1879-1884. ISSN 0951-4198 Nair, Vijay ; Treesa, P. M. ; Jayan, C. N. ; Rath, Nigam P. ; Vairamani, M. ; Prabhakar, S. (2001) Diels–Alder trapping of 3-methylenequinolin-2,4-dione: a facile synthesis of pyranoquinolinones and spiroquinolinediones Tetrahedron, 57 (36). pp. 7711-7717. ISSN 0040-4020 Nair, Vijay ; Panicker, Sreeletha B. ; Augustine, Anu ; George, Tesmol G. ; Thomas, Siji ; Vairamani, M. (2001) An efficient bromination of alkenes using cerium(IV) ammonium nitrate (CAN) and potassium bromide Tetrahedron, 57 (34). pp. 7417-7422. ISSN 0040-4020 Nagaveni, V. ; Prabhakar, S. ; Vairamani, M. (2001) Electrospray ionisation tandem mass spectrometric study of hydrogen-bonding interactions of some disaccharides with lysine Rapid Communications in Mass Spectrometry, 15 (12). pp. 1017-1021. ISSN 0951-4198 Mirza, Shama P. ; Prabhakar, S. ; Vairamani, M. (2001) Estimation of proton affinity of proline and tryptophan under electrospray ionization conditions using the extended kinetic method Rapid Communications in Mass Spectrometry, 15 (12). pp. 957-962. ISSN 0951-4198 Sekar, R. ; Kulshrestha, U. C. ; Vairamani, M. (2001) Separation and determination of 3,4-dimethoxybenzaldehyde and related compounds by high performance capillary electrophoresis Indian Journal of Chemistry - Section A: Inorganic, Physical, Theoretical and Analytical Chemistry, 40 . pp. 662-665. ISSN 0376-4710 Parthasarthy, G. ; Bhandari, N. ; Vairamani, M. ; Kunwar, A. C. ; Narasaiah, B. (2001) Natural fullerenes from the K/T boundary layer at Anjar, Kutch, India International Conference on Catastrophic Events and Mass Extinctions: Impacts and Beyond, 9-12 July 2000, Vienna, Austria, 3032 . pp. 3031-3032. Kulshrestha, U. C. ; Jain, Monika ; Sekar, R. ; Vairamani, M. ; Sarkar, A. K. ; Parashar, D. C. (2001) Chemical characteristics and source apportionment of aerosols over Indian Ocean during INDOEX-1999 Current Science, 80 (10). pp. 180-185. ISSN 0011-3891 Sinha, Pradipta ; Kundu, Abhijit ; Roy, Sujit ; Prabhakar, Sripadi ; Vairamani, M. ; Ravi Sankar, A. ; Kunwar, A. C. (2001) Copper(II)/tin(II) reagent for allylation, propargylation, alkylation, and benzylation of disulfides and elemental sulfur: new insight into the "Copper Effect" Organometallics, 20 (1). pp. 157-162. ISSN 0276-7333 Kulshrestha, Umesh C. ; Kulshrestha, Monika J. ; Sekar, R. ; Vairamani, M. ; Sarkar, Ajit K. ; Parashar, Danesh C. (2001) Investigation of alkaline nature of rain water in India Water, Air, & Soil Pollution, 130 (1-4). pp. 1685-1690. ISSN 0049-6979 Ranganathan, Subramania ; Muraleedharan, K. M. ; Chandrashekhar Rao, CH. ; Vairamani, M. ; Karle, Isabella L. (2001) One-step transformation of tricyclopentabenzene (trindane, C15H18) to bicyclo(10.3.0)pentadec-1(12)ene- 2,6,7,11-tetrone (C15H18O4) and its aldol product, 12-hydroxy-16-oxatetracyclo(10.3.1.0.1,507,11)hexadec-7(11)ene-2,6-dione (C15H18O4) Organic Letters, 3 (16). pp. 2447-2449. ISSN 1523-7060 Ismail, Nusrath ; Vairamani, M. ; Nageswara Rao, R. (2000) Determination of cis and trans isomers of monocrotophos in technical products by reversed-phase column liquid chromatography Journal of Chromatography A, 903 (1-2). pp. 255-260. ISSN 0021-9673 Ranganathan, D. ; Kurur, S. ; Kunwar, A. C. ; Sarma, A. V. S. ; Vairamani, M. ; Karle, I. L. (2000) Channel-forming, self-assembling, bishelical amphiphilic peptides: design, synthesis and crystal structure of Py(Aibn)2, n = 2, 3, 4 Journal of Peptide Research, 56 (6). pp. 416-426. ISSN 1397-002X Prabhakar, S. ; Mirza, S. P. ; Kundu, A. ; Roy, S. ; Vairamani, M. (2000) Claisen rearrangement of allyl phenyl ether and its sulfur and selenium analogues on electron impact Rapid Communications in Mass Spectrometry, 14 (13). pp. 1116-1122. ISSN 0951-4198 Varman Thampan, Raghava ; Zafar, Atya ; Imam, N. S. ; Sreeja, S. ; Suma, K. ; Vairamani, M. (2000) Cholesterol inhibits the nuclear entry of estrogen receptor activation factor (E-RAF) and its dimerization with the nonactivated estrogen receptor (naER) in goat uterus Journal of Cellular Biochemistry, 77 (3). pp. 382-395. ISSN 0730-2312 Nair, Vijay ; Sheeba, V. ; Panicker, Sreeletha B. ; George, Tesmol G. ; Rajan, Roshini ; Balagopal, Lakshmi ; Vairamani, M. ; Prabhakar, S. (2000) Cerium(IV) ammonium nitrate induced dimerization of methoxystyrenes Tetrahedron, 56 (16). pp. 2461-2467. ISSN 0040-4020 Ranganathan, Darshan ; Haridas, V. ; Kurur, Sunita ; Nagaraj, R. ; Bikshapathy, E. ; Kunwar, A. C. ; Sarma, A. V. S. ; Vairamani, M. (2000) Norbornene-constrained cyclic peptides with hairpin architecture: design, synthesis, conformation, and membrane ion transport Journal of Organic Chemistry, 65 (2). pp. 365-374. ISSN 0022-3263 Prabhakar, S. ; Krishna, P. ; Kundu, A. ; Roy, Sujit ; Vairamani, M. (1999) Mass spectral study of substituted allyl aryl and allyl alkyl selenides and some analogous sulfides Rapid Communications in Mass Spectrometry, 13 (15). pp. 1564-1572. ISSN 0951-4198 Kundu, Abhijit ; Prabhakar, Sripadi ; Vairamani, M. ; Roy, Sujit (1999) A novel copper(II)/tin(II) reagent for regio- and chemoselective carbonyl propargylation Organometallics, 18 (15). pp. 2782-2785. ISSN 0276-7333 Krishna, P. ; Prabhakar, S. ; Vairamani, M. (1999) Chiral recognition and the determination of optical purity of a-phenylethylamine using monosaccharide as a chiral selector under liquid secondary ion mass spectral conditions European Journal of Mass Spectrometry, 5 (6). pp. 485-488. ISSN 1469-0667 Krishna, P. ; Prabhakar, S. ; Vairamani, M. ; Manoharan, M. ; Jemmis, E. D. (1999) Chiral recognition and the determination of optical purity of some amino acid ester salts using monosaccharides as chiral selectors under liquid secondary ion mass spectral conditions Chemical Communications (13). pp. 1215-1216. ISSN 1359-7345 Ranganathan, Darshan ; Thomas, A. ; Haridas, V. ; Kurur, S. ; Madhusudanan, K. P. ; Roy, Raja ; Kunwar , A. C. ; Sarma, A. V. S. ; Vairamani, M. ; Sarma, K. D. (1999) Design, synthesis, and characterization of tyrosinophanes, a novel family of aromatic-bridged tyrosine-based cyclodepsipeptides Journal of Organic Chemistry, 64 (10). pp. 3620-3629. ISSN 0022-3263 Parthasarathy, G. ; Srinivasan, R. ; Vairamani, M. ; Ravikumar, K. ; Kunwar, A. C. (1998) Occurrence of natural fullerenes in low grade metamorphosed proterozoic shungite from Karelia, Russia Geochimica et Cosmochimica Acta, 62 (21-22). pp. 3541-3544. ISSN 0016-7037 Krishna, P. ; Prabhakar, S. ; Vairamani, M. (1998) Differentiation of derivatized leucine and isoleucine by tandem mass spectrometry under liquid secondary ion mass spectral conditions Rapid Communications in Mass Spectrometry, 12 (20). pp. 1429-1434. ISSN 0951-4198 Mehta, G. ; Srinivas, K. ; Vidya, R. ; Uma, R. ; Kunwar, A. C. ; Ravi Kumar, K. ; Vairamani, M. (1998) Triquinane-derived macrocyclic lactones and a [2]-catenane: synthesis and characterization Tetrahedron, 54 (36). pp. 10879-10890. ISSN 0040-4020 Parthasarathy, G. ; Srinivasan, R. ; Vairamani, M. ; Ravikumar, K. ; Kunwar, A. C. (1998) Fullerene from the proterozoic shungite deposit at Kondopoga, Karelia, Russia: Isotopic and spectroscopic studies Chinese Science Bulletin, 43 (S-1). p. 98. ISSN 1001-6538 Kasbekar, Durgadas P. ; Prasanna, Bhavani T. ; Vairamani, M. (1998) Dictyostelium caveatum mutants selected for a nystatin-resistant phenotype are cross-resistant to pisatin and other isoflavonoid phytoalexins Journal of Genetics, 77 (1). pp. 37-40. ISSN 0022-1333 Bhavani Prasanna, T. ; Vairamani, M. ; Kasbekar, D. P. (1998) Effects of pisatin on Dictyostelium discoideum: its relationship to inducible resistance to nystatin and extension to other isoflavonoid phytoalexins Archives of Microbiology, 170 (4). pp. 309-312. ISSN 0302-8933 Prabhakar, S. ; Krishna, P. ; Vairamani, M. (1997) Acetone chemical ionization studies. Acetone chemical ionization studies-IX: Amino acids and nucleobases Rapid Communications in Mass Spectrometry, 11 (18). pp. 1945-1952. ISSN 0951-4198 Suma, K. ; Prasada Raju, N. ; Vairamani, M. (1997) Liquid secondary ion mass spectral study of fatty acid methyl esters: silver cationization and collision induced dissociation studies Rapid Communications in Mass Spectrometry, 11 (18). pp. 1939-1944. ISSN 0951-4198 Kundu, Abhijit ; Prabhakar, Sripadi ; Vairamani, M. ; Roy, Sujit (1997) A novel copper (II)/tin (II) reagent for aqueous carbonyl allylation: in situ diagnostics of reactive organometallics in water Organometallics, 16 (22). pp. 4796-4799. ISSN 0276-7333 Chattopadhyay, M. K. ; Jagannadham, M. V. ; Vairamani, M. ; Shivaji, S. (1997) Carotenoid pigments of an antarctic psychrotrophic bacterium Micrococcus roseus: temperature dependent biosynthesis, structure, and interaction with synthetic membranes Biochemical and Biophysical Research Communications, 239 (1). pp. 85-90. ISSN 0006-291X Prabhakar, S. ; Vairamani, M. (1997) Acetone chemical ionization mass spectrometry Mass Spectrometry Reviews, 16 (5). pp. 259-281. ISSN 0277-7037 Prabhakar, S. ; Krishna, P. ; Vairamani, M. (1997) Mass spectral study of acyclic diastereomers by electron impact-III: 2-bromo-3-acetoxy succinates and tartrate diacetates European Journal of Mass Spectrometry, 3 (6). pp. 415-425. ISSN 1469-0667 Prabhakar, S. ; Gawali, B. B. ; Bhalerao, U. T. ; Vairamani, M. (1997) Mass spectral study of isomeric benzoxazolinones by electron ionisation European Journal of Mass Spectrometry, 3 (1). pp. 49-54. ISSN 1469-0667 Vairamani, M. ; Prabhakar, S. ; Devi, Rama A. (1996) Mass spectral study of diastereomers on electron impact—II Rapid Communications in Mass Spectrometry, 10 (7). pp. 737-741. ISSN 0951-4198 Vairamani , M. ; Suma , K. ; Kamal, A. ; Gayatri, N. L. (1996) Mass spectral study of etoposide Rapid Communications in Mass Spectrometry, 10 (7). pp. 817-820. ISSN 0951-4198 Vairamani, M. ; Prabhakar, S. ; Raju, Prasada N. ; Rao, Viswanadha G. K. (1995) Acetone chemical ionization studies VIII: pyridine derivatives European Journal of Mass Spectrometry, 1 (6). pp. 539-543. ISSN 1469-0667 Phillips, C. ; Vairamani, M. ; Harris, F. M. ; Morley, C. P. ; Andrews, S. R. ; Parry, D. E. (1995) Combined experimental and computational investigation of the double ionization of (CH3)4M molecules (M = Si, Ge, Sn and Pb) Journal of the Chemical Society, Faraday Transactions, 91 . pp. 1901-1906. ISSN 0956-5000 Vairamani, M. ; Prabhakar, S. ; Rama Devi, A. ; Madhusudanan, K. P. (1995) Mass spectral study of diastereomers by electron impact Rapid Communications in Mass Spectrometry, 9 (8). pp. 651-654. ISSN 0951-4198 Khazi, I. M. ; Gadad, A. K. ; Mahajanshetti, C. S. ; Vairamani, M. (1994) Mass spectra of some 1,3, 4-thiadiazole derivatives Indian Journal of Chemistry - Section B: Organic and Medicinal Chemistry, 33 (6). pp. 585-589. ISSN 0376-4699 Andrews, S. R. ; Vairamani, M. ; Harris, F. M. (1994) Further information on triplet-state energies of the ethane dication International Journal of Mass Spectrometry and Ion Processes, 133 (1). L1-L4. ISSN 0168-1176 Vairamani, M. (1993) Acetone chemical ionization studies. VII- Acetylation of some aromatic compounds Organic Mass Spectrometry, 28 (12). pp. 1498-1503. ISSN 0030-493X Srinivas, R. ; Vairamani, M. ; Mathews, C. K. (1993) Gas-phase halo alkylation of C60-fullerene by ion-molecule reaction under chemical ionization Journal of the American Society for Mass Spectrometry, 4 (11). pp. 894-897. ISSN 1044-0305 Vairamani, M. ; Siva Kumar, K. V. (1993) Acetone chemical ionization studies VI: Hexenyl acetates Organic Mass Spectrometry, 28 (6). pp. 689-692. ISSN 0030-493X Andrews, S. R. ; Parry, D. E. ; Jackson, P. J. ; Vairamani, M. ; Griffiths, W. J. ; Harris, F. M. (1993) Electronic-state energies of the CH2I2+2, CHI2+3 and CI2+4 dications Journal of the Chemical Society, Faraday Transactions, 89 (16). pp. 2945-2950. ISSN 0956-5000 Srinivas, R. ; Vairamani, M. ; Siva Kumar, K. V. ; Rajeev, M. S. ; Viswanadha Rao, G. K. (1992) Tetramethylsilane chemical ionization mass spectrometry of some isomeric unsaturated dicarboxylic acids and esterst Organic Mass Spectrometry, 27 (11). pp. 1289-1292. ISSN 0030-493X Vairamani, M. ; Siva Kumar, K. V. ; Viswanadha Rao, G. K. (1992) Mass spectral study of derivatives of 2-aryloxy-2-methylpropanoicacids Organic Mass Spectrometry, 27 (2). pp. 113-115. ISSN 0030-493X Vairamani, M. ; Saraswathi, M. ; Siva Kumar, K. V. (1992) Acetone chemical ionization studies III-displacement reactions in alkyl acetates Organic Mass Spectrometry, 27 (1). pp. 27-30. ISSN 0030-493X Andrews, S. R. ; Parry, D. E. ; Vairamani, M. ; Harris, F. M. (1992) The allene dication: calculated and measured triplet electronic state energies Journal of the Chemical Society, Faraday Transactions, 88 . pp. 3403-3407. ISSN 0956-5000 Vairamani, M. ; Saraswathi, M. (1991) Mass spectral study of geometrical (E)- and (Z)-isomers Mass Spectrometry Reviews, 10 (6). pp. 491-517. ISSN 0277-7037 Vairamani, M. ; Saraswathi, M. ; Viswanadha Rao, G. K. (1991) Mass spectral study of substituted methyl (E)-and (Z)-cinnamates under 1,2-dibromoethane chemical ionization Organic Mass Spectrometry, 26 (9). pp. 786-788. ISSN 0030-493X Vairamani, M. ; Nageswara Rao, B. ; Pardhasaradhi, M. (1991) Characteristic ortho-methoxycarboxylate fragmentation of yerrinquinone and its derivatives on electron impact Organic Mass Spectrometry, 26 (1). pp. 33-37. ISSN 0030-493X Vairamani, M. (1990) Nitromethane as a substitute for nitric oxide in chemical ionization Organic Mass Spectrometry, 25 (5). pp. 271-273. ISSN 0030-493X Vairamani, M. ; Ali Mirza, Urooj ; Srinivas, R. (1990) Unusual positive ion reagents in chemical ionization mass spectrometry Mass Spectrometry Reviews, 9 (2). pp. 235-258. ISSN 0277-7037 Vairamani, M. ; Srinivas, R. ; Viswanadha Rao, G. K. ; Nagaraj, R. ; Laxma Reddy, G. ; Saberwal, G. (1990) Mass spectra of t-butyloxycarbonyl (BOC)-protected peptides Organic Mass Spectrometry, 25 (2). pp. 97-100. ISSN 0030-493X Srinivas, R. ; Vairamani, M. ; Viswanadha Rao, G. K. ; Mirza, U. A. (1989) Acrylonitrile: a new chemical ionization reagent Organic Mass Spectrometry, 24 (6). pp. 435-438. ISSN 0030-493X Vairamani, M. ; Kamal, Ahmed ; Reddy, A. V. N. ; Sattur, P. B. (1989) Mass spectra of 10-substituted 10H-imidazo[1,2-b]-[1,2,4]benzothiadiazine 5,5-dioxides and their 2,10-dihydro analogues Organic Mass Spectrometry, 24 (5). pp. 350-352. ISSN 0030-493X Madhusudanan, K. P. ; Bhat, Neelima ; Bhaduri, A. P. ; Vairamani, M. (1989) Fragmentation of certain substituted azadispiro(5.1.5.2)pentadec-9-ene and azadispiro(4.1.4.2)tridec-8-ene derivatives under electron ionization Organic Mass Spectrometry, 24 (4). pp. 211-215. ISSN 0030-493X Vairamani, M. ; Srinivas, R. ; Viswanadha Rao, G. K. (1988) Negative ion chemical ionization (Cl-) mass spectra of amino acids Biological Mass Spectrometry, 17 (4). pp. 299-300. ISSN 1052-9306 Vairamani, M. ; Srinivas, R. ; Mirza, U. A. (1988) 1,2-Dibromoethane as a positive chemical ionization reagent: application to geometrical isomers Organic Mass Spectrometry, 23 (8). pp. 620-621. ISSN 0030-493X Vairamani, M. ; Ali Mirza, Urooj (1987) Mass spectra of phenoxyacetyl derivatives. Mechanism of loss of 'CO' from phenyl phenoxyacetates Organic Mass Spectrometry, 22 (7). pp. 406-409. ISSN 0030-493X Raji Reddy, R. ; Iyengar, D. S. ; Bhalerao, U. T. ; Vairamani, M. (1986) Substituent effects on the mass spectral behavior of some N-amino spirothiazolidinones Organic Mass Spectrometry, 21 (11). pp. 759-761. ISSN 0030-493X Green, Mark M. ; Boyle, Barbara A. ; Vairamani, M. ; Mukhopadhyay, Triptikumar ; Saunders Jr., William H. ; Bowen, Phillip ; Allinger, Norman L. (1986) Temperature-dependent stereoselectivity and hydrogen deuterium kinetic isotope effect for .gamma.-hydrogen transfer to 2-hexyloxy radical. The transition state for the Barton reaction Journal of American Chemical Society, 108 (9). pp. 2381-2387. ISSN 0002-7863 Vairamani, M. ; Ishratullah, K. ; Reddy, D. M. ; Viswanadha Rao, G. K. (1985) Mass spectra of phenoxyacetyl derivatives Organic Mass Spectrometry, 20 (12). pp. 724-726. ISSN 0030-493X Green, Mark M. ; Vairamani, M. (1981) Stereospecific formation of equatorial diacetylimides from the stereoisomers of six-membered carbocyclic amines Journal of Organic Chemistry, 46 (24). pp. 5037-5039. ISSN 0022-3263 Ramana, D. V. ; Vairamani, M. (1979) Ortho effects in organic molecules on electron impact. VI-Ortho effects of a carboxyl group in N-substituted anilines Organic Mass Spectrometry, 14 (2). pp. 98-100. ISSN 0030-493X Ramana, D. V. ; Vairamani, M. (1977) Ortho effects in organic molecules on electron impact. V-ortho effects of the nitro group in n-substituted anilines Organic Mass Spectrometry, 12 (3). pp. 166-168. ISSN 0030-493X Ramana, D. V. ; Vairamani, M. ; Kala, S. (1975) Electron-impact-induced hydrogen migration in organic molecules I- Substituent effects in the mass spectra of pivlanilides Organic Mass Spectrometry, 10 (3). pp. 196-199. ISSN 0030-493X Ramana, D. V. ; Vairamani, M. ; Kala, S. (1975) Ortho effects in organic molecules on electron-impact II- Ortho effects in substituted α,α,α-trichloracetanilides Organic Mass Spectrometry, 10 (1). pp. 26-32. ISSN 0030-493X Ramana, D. V. ; Vairamani, M. (1974) Ortho effects in organic molecules on electron-impact I-oxidation of olefinic double bond by the ortho nitro group in stilbazoles Organic Mass Spectrometry, 9 (11). pp. 1158-1160. ISSN 0030-493X |