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CERILLIANT™ Zolpidem Phenyl-4-carboxylic acid-D4 Solution, 100 μg/mL in Acetonitrile:Water, Sold by MilliporeSigma™ Supelco™

Certified reference material

Supplier:  MilliporeSigma Supelco Z0121ML

Catalog No. 01-002-195

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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.


UN 1648 3 / PGII
1 mL
100 μg/mL in acetonitrile:water
13°C (55.4°F)
Safety and Handling

Safety and Handling

Recommended Storage : -20°C



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