Zobrazeno 1 - 10
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pro vyhledávání: '"Lester Chafetz"'
Autor:
Lester Chafetz
Witty and practical, this book is for amateur string instrument players who want to play quartets and other forms of chamber music. It covers everything. The long chapter discussing the'literature'is exceptionally valuable.
Autor:
Ketan P. Shah, Lester Chafetz
Publikováno v:
International Journal of Pharmaceutics. 109:271-281
The feasibility of preparing oral sustained release suspensions by using sparingly soluble salts of soluble ionic drugs was assessed in this study. Diltiazem was used as a model drug. A less soluble pectate salt of the drug was prepared and encapsula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dcfc023ca7a086644dcf8d0a49c1266f
https://doi.org/10.1016/0378-5173(94)90389-1
https://doi.org/10.1016/0378-5173(94)90389-1
Publikováno v:
International Journal of Pharmaceutics. 108:95-100
Enhancement of the optical rotation of carbidopa by reaction of the hydrazine moiety with β-dicarbonyl compounds has been reported. The influence of reaction conditions on the extent and rate of pyrazole formation by the carbidopa reaction with 2,4-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c684f37a560f55957d3be5d65ca8103b
https://doi.org/10.1016/0378-5173(94)90319-0
https://doi.org/10.1016/0378-5173(94)90319-0
Publikováno v:
Journal of pharmaceutical sciences. 83(9)
A solution of selegiline hydrochloride reference standard, which contained no detectable impurities at the time of its preparation, was found by HPLC to contain a trace of a compound at the locus of methamphetamine when analyzed after 1 year. Heating
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ba023336cf60def159376a84e0767c9
https://pubmed.ncbi.nlm.nih.gov/7830240
https://pubmed.ncbi.nlm.nih.gov/7830240
Publikováno v:
International Journal of Pharmaceutics. 82:151-152
To enhance optical rotation, the hydrazino moiety of l -carbidopa was derivatized to a pyrazole ring by reaction with a β-dicarbonyl compound, 2,4-pentanedione, 1,1,1-trifluoro-2,4-pentanedione or malondialdehyde. Reaction with 2,4-pentanedione prod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9e5c52c23ce74b8b492d943bad84e80
https://doi.org/10.1016/0378-5173(92)90084-f
https://doi.org/10.1016/0378-5173(92)90084-f
Autor:
Lester Chafetz, Ketan P. Shah
Publikováno v:
Journal of Pharmaceutical Sciences. 80:171-172
A brief study of the stability of diltiazem was conducted at 70 degrees C in the pH range of 0.45 to 6.1 using polarimetry. Racemization did not occur. The hydrolysis rate of the acetate ester moiety was found to be slow, with a minimum in the pH-rat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d0c97c6998ed621e24516f9dc9b3fd2
https://doi.org/10.1002/jps.2600800218
https://doi.org/10.1002/jps.2600800218
Autor:
Ted Rust, Lester Chafetz
Publikováno v:
Notes. 47:396
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a6ac388b0e7f4bbb0fd9d142c37d76c
https://doi.org/10.2307/941983
https://doi.org/10.2307/941983
Autor:
Li Hang Chow, Lester Chafetz
Publikováno v:
Journal of Pharmaceutical and Biomedical Analysis. 6:511-514
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b154e80dd99ff7a1fa61c370900fdf3e
https://doi.org/10.1016/0731-7085(88)80018-9
https://doi.org/10.1016/0731-7085(88)80018-9
Autor:
Lester Chafetz, Sándor Görög
Publikováno v:
Critical Reviews in Analytical Chemistry. 9:333-383
I. INTRODUCTION As a consequence of the great importance of steroids in clinical chemistry, biochemistry, and pharmacy, a continously increasing interest has been shown towards their analysis. The number of publications from the field of steroid anal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c7c5c10d7a6cd6814ce8fb57ef45aaf
https://doi.org/10.1080/10408348008085600
https://doi.org/10.1080/10408348008085600