... diazepam, udiazepam, urazepam, prazepam, utoprazepam, dipotassium clorazepate, medazepam, chlordiazepoxide, unitrazepam, alprazolam, midazolam, etizolam and brotizolam for both blood and ... fatal concentrations290 BenzodiazepinesMass chromatograms of triazolam, 4-hydroxytriazolam, α-hydroxytriazolam and alprazolam (IS) . A 100-ng aliquot each of triazolam, 4-hydroxytriazolam and ... LC/MS analysis of triazolam, and its metabolites 4-hydroxy-triazolam and α-hydroxytriazolam is also presented.GC/MS analysis of benzodiazepines in blood and urineReagents and their preparation...