2-Phenylpyridine-d9 is the deuterium labeled 2-Phenylpyridine-d9 (HY-W017077)[1].
References
[1] Russak, et sl. Impact of deuterium substitution on the pharmacokinetics of pharmaceuticals. Annals of Pharmacotherapy 53.2 (2019): 211-239. DOI:10.1080/0142159X.2018.1500682