论文部分内容阅读
Three new metabolites(N-acetyl-pseudoephedrine,N-acetyl-norpseudoephedrine and N,O-diacetylnorpseudoephedrine)of ephedrineswere d(?)ected and confirmed by GC/MS method and chemical derivatiza-tion.The metabolic pathway of acetylation of hydroxyl group isr