(Rac) -5-Hydroxymethyl Tolterodine hydrochloride

(Rac) -5-Hydroxymethyl Tolterodine hydrochloride is the active metabolite of Tolterodine and a potent, non-selective muscarinic acetylcholine receptor antagonist. It is widely used in preclinical research, including in vitro binding assays and in vivo models, to investigate overactive bladder pathophysiology and antimuscarinic mechanisms.