Tiotropium Bromide Impurity

Tiotropium bromide impurity-d3 is deuterium labeled (2S,3aR,5S,6S,6aS)-6-Hydroxy-4,4-dimethylhexahydro-2H-2,5-methanofuro[3,2-b]pyrrol-4-ium bromide (Tiotropium Bromide Impurity)[1].

[1] Russak EM, et al. Impact of Deuterium Substitution on the Pharmacokinetics of Pharmaceuticals. Ann Pharmacother. 2019 Feb;53(2):211-216. DOI:10.1177/1060028018797110