Product Description: (Rac)-Hydroxycotinine-d3 is deuterated labeled Hydroxycotinine (HY-113239). Hydroxycotinine is the main nicotine metabolite detected in smokers urine.
References: [1]Russak EM, et al. Impact of Deuterium Substitution on the Pharmacokinetics of Pharmaceuticals. Ann Pharmacother. 2019 Feb;53(2):211-216.