title: Determination of peptido-aminobenzophenone (2-o-chlorobenzoyl-4-chloro-N-methyl-N'-glycyl-glycinanilide) by electron-capture gas-liquid chromatography.
abstract: A gas-liquid chromatographic method for the determination of peptido-aminobenzophenone (2-o-chlorobenzoyl-4-chloro-N-methyl-N'-glycyl-glycinanilide, I) in dog plasma was developed. Decomposition of compound I was observed during chromatography. In alkaline medium, compound I in plasma was submitted to ring closure to yield 3-amino-6-chloro-5-(2-chlorophenyl)-1-methylquinolin-2-one (aminoquinolone), and the hexane extract was assayed by gas-liquid chromatography using electron-capture detection. The concentration range of compound I studied was 10--90 ng per 0.5 ml of plasma. Interference from both endogenous and exogenous sources was negligible. The method could be applied to the determination of the plasma level of compound I in dogs following oral administration of a single 5 mg/kg dose.
mesh_terms: D000634:Aminoquinolines / Q000032:analysis; D000818:Animals; D014151:Anti-Anxiety Agents / Q000097:blood*; D001577:Benzophenones / Q000097:blood*; D002849:Chromatography, Gas / Q000379:methods; D004151:Dipeptides / Q000097:blood*; D004285:Dogs; D005998:Glycine / Q000031:analogs & derivatives
chemical_list: D000634:Aminoquinolines; D014151:Anti-Anxiety Agents; D001577:Benzophenones; D004151:Dipeptides; C026735:2-(2-chlorobenzoyl)-4-chloro-N-methyl-N'-glycylglycinanilide; C025152:aminoquinolone; D005998:Glycine