title: Determination of phenobarbital, p-hydroxyphenobarbital and phenobarbital-N-glucoside in urine by gas chromatography chemical ionization mass spectrometry.
abstract: A sensitive and efficient analytical procedure was developed to determine phenobarbital-N-glucoside, phenobarbital and p-hydroxyphenobarbital in urine. The stable-isotope labeled internal standards used in this assay were obtained in urine from a subject who ingested 15N-labeled phenobarbital.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006801:Humans; D010634:Phenobarbital / Q000031:analogs & derivatives* / Q000652:urine*
chemical_list: C017414:4-hydroxyphenobarbital; C043855:phenobarbital-N-glucoside; D010634:Phenobarbital