Zobrazeno 1 - 10
of 24
pro vyhledávání: '"R. Rao Gadde"'
Autor:
R. Rao Gadde, James E. DiNunzio
Publikováno v:
Journal of Chromatography A. 594:209-216
This paper reports on the development of high-performance liquid chromatographic methods for the determination of hydroxamic acids in topical formulations. A poly(styrene-divinylbenzene)copolymer stationary phase with a mobile phase of acetonitrile a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0768757a108e779db689feba4fbb092a
https://doi.org/10.1016/0021-9673(92)80332-o
https://doi.org/10.1016/0021-9673(92)80332-o
Autor:
R. Rao Gadde, Frederick W. Burton
Publikováno v:
Journal of Chromatography A. 593:41-46
An isocratic reversed-phase high-performance liquid chromatographic method for the analysis of 13-cis-retinoic acid in serum is developed. Sample preparation includes deproteination with acetonitrile-perchloric acid-acetic acid followed by centrifuga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc46a544ed96926a6877ff8190feffd3
https://doi.org/10.1016/0021-9673(92)80264-u
https://doi.org/10.1016/0021-9673(92)80264-u
Publikováno v:
Journal of Pharmaceutical and Biomedical Analysis. 9:1031-1036
Chlorhexidine phosphanilate (CHP) is analysed by two separate reversed-phase HPLC methods. CHP was found to be a non-stoichiometric compound with a phosphanilic acid to chlorhexidine ratio of 1.83. By careful choice of solvents, solution pH and HPLC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5fd20c647d7b9f82c937ff39bb408905
https://doi.org/10.1016/0731-7085(91)80040-g
https://doi.org/10.1016/0731-7085(91)80040-g
Publikováno v:
Journal of Chromatography A. 522:227-234
A stability indicating reversed-phase high-performance liquid chromatographic method has been developed to quantify tretinoin (all- trans -retinoic acid) in cream formulations. Tretinoin cream samples were dissolved directly in tetrahydrofuran and di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06affe057d92586138fe7c8cf4d94da8
https://doi.org/10.1016/0021-9673(90)85192-x
https://doi.org/10.1016/0021-9673(90)85192-x
Autor:
R. Rao Gadde, Frederick W. Burton
Publikováno v:
Journal of Chromatographic Science. 28:543-546
A method is described to determine the purity of 13-cis-retinoic acid. Spectrophotometry is used to determine the non-UV-absorbing impurities, and HPLC is used to determine the UV-absorbing impurities. In combination, these methods permit determinati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ad02c619e507bc751f38b6ec9779b9a
https://doi.org/10.1093/chromsci/28.10.543
https://doi.org/10.1093/chromsci/28.10.543
Autor:
R. Rao Gadde, James E. DiNunzio
Publikováno v:
Journal of Chromatography A. 519:117-124
A method for the determination of sunscreen compounds in over-the-counter topical sunscreen products is described. The method uses reversed-phase liquid chromatography with an eluent of tetrahydrofuran and dilute acetic acid. The analytes are detecte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75f483d9050b659c4e28ad6cc26cc304
https://doi.org/10.1016/0021-9673(90)85140-q
https://doi.org/10.1016/0021-9673(90)85140-q
Autor:
Federick W. Burton, R. Rao Gadde
Publikováno v:
Journal of Chromatography A. 328:317-324
A reversed-phased liquid chromatographic methods is described for the determination of anthralin in topical products. The factors affecting the degradation of anthralin solid and solutions are discussed. Ultraviolet spectra of degradation products ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d80dbcbf69c83383330fb4c7de4cdfc
https://doi.org/10.1016/s0021-9673(01)87402-1
https://doi.org/10.1016/s0021-9673(01)87402-1
Autor:
Haiyung Cheng, R. Rao Gadde
Publikováno v:
Journal of Chromatographic Science. 23:227-230
Discussion de quelques artefacts dans un detecteur HP 1040A, et proposition de quelques modifications de routines
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0eb1bb63c77edc94d0c9cdbbd924e91
https://doi.org/10.1093/chromsci/23.5.227
https://doi.org/10.1093/chromsci/23.5.227
Autor:
R. Rao Gadde, Haiyung Cheng
Publikováno v:
Journal of Chromatography A. 355:399-406
A stability-indicating high-performance liquid chromatographic method using an amine column and a UV detector at 214 nm is developed for lactic acid in dermatological products. The detector response for lactic acid is linear in the range 8.8–39.9
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::364516cfcfbcbe40e29045c51c95779a
https://doi.org/10.1016/s0021-9673(01)97344-3
https://doi.org/10.1016/s0021-9673(01)97344-3
Autor:
R. Rao Gadde, Herbert A. Laitinen
Publikováno v:
Analytical Chemistry. 46:2022-2026
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6368a804967231e468cc78736ef8762
https://doi.org/10.1021/ac60349a004
https://doi.org/10.1021/ac60349a004