1020719-70-3

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(R,S)-Norcotinine-pyridyl-d4 is the labeled version of (RS)-Norcotinine (N662000(M)), which is a metabolite of (+/-)-Cotinine.

Norcotinine, or desmethylcotinine, is a urinary metabolite of nornicotine and cotinine found in smokers and users of other nicotine products including chewing tobacco, snuff and electronic cigarettes. This internal standard is suitable for quantitation of norcotinine levels in urine, serum, saliva or plasma by GC/MS or LC/MS for urine drug testing, clinical toxicology, nicotine testing or forensic analysis.