Product Description: 2-Ethyl-3,5-dimethylpyrazine-13C2 is 13C labeled Nordiphenhydramine (HY-W585858).
Formula: C6 13C2H12N2
References: [1]Russak EM, et al. Impact of Deuterium Substitution on the Pharmacokinetics of Pharmaceuticals. Ann Pharmacother. 2019 Feb;53(2):211-216.