Zobrazeno 1 - 6
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pro vyhledávání: '"Gary J Lehr"'
Publikováno v:
Journal of Pharmaceutical and Biomedical Analysis. 33:627-637
A gradient elution LC method was developed to separate methoxsalen from three of its known impurities: isopimpinellin, bergapten, and ammidin. The method employs a methanol–6%THF (aq) mobile phase, phenyl column, and detection at 254 nm. The gradie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66b10a27e5cdeddf55479d89b7d0be96
https://doi.org/10.1016/s0731-7085(03)00353-4
https://doi.org/10.1016/s0731-7085(03)00353-4
Autor:
Gary J Lehr
Publikováno v:
Journal of AOAC INTERNATIONAL. 79:1288-1293
An isocratic, reversed-phase liquid chromatographic (LC) method was developed for simultaneous determination of diphenoxylate hydrochloride (I) and atropine sulfate (II) in pharmaceutical products. Analysis is conducted on a Spherisorb CN column (5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ef2d715ef8103483338355ad2cfc51d
https://doi.org/10.1093/jaoac/79.6.1288
https://doi.org/10.1093/jaoac/79.6.1288
Publikováno v:
Journal of AOAC INTERNATIONAL. 78:339-342
A simple and specific liquid chromatographic method was developed for the determination of atropine in nerve gas antidotes and several other dosage forms. The method is also used simultaneously to quantitate phenol, an antimicrobial agent present in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e83342c3cbe6da1c9a9f6a465b583bd1
https://doi.org/10.1093/jaoac/78.2.339
https://doi.org/10.1093/jaoac/78.2.339
Publikováno v:
Journal of AOAC INTERNATIONAL. 78:413-418
A purge-and-trap gas chromatographic-mass spectrometric procedure is presented for determination of trace levels of benzene in denture adhesives and their raw materials. The limit of quantitation is 10 ppb, reproducibility is ± 10%, and recoveries o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a7304911a9f56985ff112ae38067d10
https://doi.org/10.1093/jaoac/78.2.413
https://doi.org/10.1093/jaoac/78.2.413
Autor:
Gary J Lehr, Stella M Yuen
Publikováno v:
Journal of AOAC INTERNATIONAL. 74:461-464
A specific liquid chromatographic method was developed for determination of clidinium bromide and clidinium bromidechlordiazepoxide hydrochloride combinations in capsules. The procedure uses a Partisil 10 ODS-3 column and a mobile phase consisting of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0162bc29fe72efe63f73d350c5a9a61d
https://doi.org/10.1093/jaoac/74.3.461
https://doi.org/10.1093/jaoac/74.3.461
Publikováno v:
Journal of pharmaceutical and biomedical analysis. 19(3-4)
Twenty-two lots of recently synthesized trimethoprim drug substance, from five different manufacturers, in three different countries of origin, China, Israel and the United States, were investigated for the presence of impurities. A liquid chromatogr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38df5b883ecf78d766bed1a17994630d
https://pubmed.ncbi.nlm.nih.gov/10704103
https://pubmed.ncbi.nlm.nih.gov/10704103