A stable-labeled internal standard suitable for quantitation of Zolpidem Phenyl-4-carboxylic acid levels in urine or other matrices by LC/MS or GC/MS for testing applications in clinical toxicology, forensic analysis, or urine drug testing. Zolpidem Phenyl-4-carboxylic acid is the major urinary metabolite of zolpidem, accounting for 51% of an administered dose. Literature references indicate the metabolite can be found in urine for 2-3 days following ingestion of a single therapeutic dose of zolpidem. Zolpidem, marketed as Ambien or Stilnox, is a nonbenzodiazepine used for the short-term treatment of insomnia.
Molecular Formula: C19H15D4N3O3
Molecular Weight: 341.4
Linear Structural Formula: C19H15D4N3O3
Storage: -20C
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