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1-Hydroxy Alprazolam-d5 is labelled 1-Hydroxy Alprazolam (H761500) which is a metabolite of Alprazolam (A575650), an anxiolytic.

This stable-labeled internal standard is suitable for quantitation of α-hydroxyalprazolam levels in urine, serum, or plasma by LC/MS or GC/MS for urine drug testing, clinical toxicology, forensic analysis, or isotope dilution methods. α-Hydroxyalprazolam is a major urinary metabolite of alprazolam, a benzodiazepine drug approved to treat panic and other anxiety disorders including generalized or social anxiety disorder.