ISSN:
0935-6304
Keywords:
Gas-liquid chromatography
;
Plasma determination
;
Midazolam
;
Pharmacokinetic study
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
A sensitive gas liquid chromatographic (GLC) assay was developed for plasma determinations of 8-chloro-6-(2′ -fluorophenyl)-1-methyl-4H-imidazo[1,5 α][1,4]benzodiazepine (compound I) and its hydroxymethylimidazo metabolite (compound II). The internal standards used were 8-chloro-6-(2′ -chlorophenyl)-1 -methyl-4H-imidazo[1,5 α][1,4]benzodiazepine (compound VI) and 7-chloro-5-(2′ -fluorophenyl)-1, 3-dihydro-1-(hydroxyethyl)-2H-1,4-benzodiazepin-2-one (compound VII) for compounds I and II, respectively. Following extraction, and silylation for compound II, compounds I and II were analyzed by GLC using a glass column packed with 5% OV-101 on Gas-Chrom Q, and a 63Ni electron-capture detector. The GLC method was validated by a CI-GC/MS technique. The detection limit of the assay is approximately 4-5 ng/ml for compound I and 3 ng/ml for compound II. The method was used in comparative pharmacokinetic studies of the distribution of the two compounds in arterial and venous blood.
Additional Material:
11 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jhrc.1240050106
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