Zobrazeno 1 - 10
of 20
pro vyhledávání: '"UTTAM KUMAR RAY"'
Autor:
Appalacharyulu Salapaka, Kishore Babu Bonige, Hemant Kumar Sharma, Uttam Kumar Ray, Raghu Babu Korupolu
Publikováno v:
Asian Pacific Journal of Health Sciences. 9:91-95
A simple and sensitive method based on capillary electrophoresis with UV detection was developed, optimized, and validated for the determination of five membered heterocyclic polar compound, imidazole in pharmaceutical drug substances. Separation was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de36fcfe2ecba5bce43fd98d77a0876e
https://doi.org/10.21276/apjhs.2022.9.3.19
https://doi.org/10.21276/apjhs.2022.9.3.19
Autor:
Uttam Kumar Ray, Annapurna Nowduri, Raghu Babu Korupolu, Sreenivasulu Boju, Sarvesh Kumar, Dhanraj T. S. S. Sundaram, Chandra Sekhara Rao Nethinti
Publikováno v:
Asian Journal of Chemical Sciences. :46-53
Pd-Catalyzed hydrogenation process has been developed to synthesize tetrahydrocurcumin from synthetic curcumin. Use of diphenyl sulphide as catalyst poison is crucial for lowering the activity of the catalyst and thus reduces impurity formation. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3a16486bc7c61f3b0766b77a99e4b09
https://doi.org/10.9734/ajocs/2022/v11i219120
https://doi.org/10.9734/ajocs/2022/v11i219120
Autor:
Appalacharyulu Salapaka, Kishore Babu Bonige, K. Chandrasekhar Reddy, Hemant Kumar Sharma, Uttam Kumar Ray
Publikováno v:
Asian Journal of Chemistry. 34:2587-2592
A simple, sensitive, selective and reproducible stability indicating reverse phase HPLC method has been developed and validated for the determination of related substances of linagliptin drug substance. Separation of impurities was carried out on a Y
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::43b36f6382bbb3c38389f2eb072f67ea
https://doi.org/10.14233/ajchem.2022.23924
https://doi.org/10.14233/ajchem.2022.23924
Publikováno v:
Journal of Advanced Scientific Research. 12:198-209
Schiff base macrocycles play a significant role in living organisms with a broad range of pharmaceutical activities. In the present study, a novel series of 26 member macrocyclic compounds were synthesized via recombination of novel diamine and terep
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c68fab9245a63fc0cf63de8295d65661
https://doi.org/10.55218/jasr.s2202112323
https://doi.org/10.55218/jasr.s2202112323
Autor:
N. Sreenivas, Chandrasekhar Reddy T, Uttam Kumar Ray, Raghu Babu Korupolu, Hemant Sharma, Kishore Babu Bonige, Appalacharyulu Salapaka, Chandrasekhar Reddy K
Publikováno v:
ELECTROPHORESIS. 40:1066-1073
A simple, sensitive, and stability indicating isocratic reverse phase high performance liquid chromatography method has been developed, optimized and validated for the separation and quantification of S-enantiomer in linagliptin (R-enantiomer) drug s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1086755c9d9885b6b112dfdd8d1de710
https://doi.org/10.1002/elps.201800502
https://doi.org/10.1002/elps.201800502
Autor:
V. Kumar, N. Sreenivas, Vinay Kumar Patcha, K. S. R. Pavan Kumar, Susheela Bhai Gajbhiye, Uttam Kumar Ray
Publikováno v:
American Journal of PharmTech Research. 8:186-195
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2a1d118bc463c383292302108ec895f
https://doi.org/10.46624/ajptr.2018.v8.i2.014
https://doi.org/10.46624/ajptr.2018.v8.i2.014
Publikováno v:
Medicinal Chemistry Research. 22:1624-1629
Microwave-assisted rapid and efficient procedure for the synthesis of bisphosphonate and their libraries is described in solvent-free medium. Bisphosphonates having nitrogen and sulfur are synthesized following this new procedure. This procedure is s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6057890f5278cbeab438641512d1c7fc
https://doi.org/10.1007/s00044-012-0153-4
https://doi.org/10.1007/s00044-012-0153-4
Autor:
Uttam Kumar Ray, G. Srikanth, D. V. N. Srinivas Rao, P. Lavanya, P. Badarinadh Gupta, Aminul Islam
Publikováno v:
Synthetic Communications. 42:1359-1366
A new and efficient process through a new intermediate, (2E)-2-cyano-3-(3,4-dihydroxy-5-nirtrophenyl)prop-2-enoic acid 15, has been described for preparing substantially pure entacapone 1. This new intermediate 15 was prepared by Knoevenagel condensa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::222da0662b3bfd77997d2cde74f16636
https://doi.org/10.1080/00397911.2010.539894
https://doi.org/10.1080/00397911.2010.539894
Autor:
Hemant Sharma, Uttam Kumar Ray, Ch. Srinivas, K. Mukkanti, T. Joseph Sunder Raj, N. Rashmitha, N. Srinivas
Publikováno v:
E-Journal of Chemistry, Vol 7, Iss 2, Pp 555-563 (2010)
The present paper describes the development of a reverse phase chromatographic (RPLC) method for montelukast sodium in the presence of its impurities and degradation products generated from forced degradation studies. The drug substance was subjected
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8daa7a394f588f6422a4d73d2f50705
https://doi.org/10.1155/2010/156593
https://doi.org/10.1155/2010/156593
Autor:
Aminul Islam, N. Murali, V. Kumar, Srikanth Guntupalli, D. Satheesh, Uttam Kumar Ray, P. Badrinadh Gupta
Publikováno v:
Journal of pharmaceutical and biomedical analysis. 88
During the synthesis of ezetimibe, two process related impurities were detected were HPLC analysis at levels ranging from 0.05 to 0.8%. These two impurities were isolated by column chromatography and co-injected with ezetimibe sample to confirm the r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf8b68abe78ccf83584472f9b255d279
https://pubmed.ncbi.nlm.nih.gov/24176742
https://pubmed.ncbi.nlm.nih.gov/24176742