α-Cyclohexyl-α-hydroxy-3-cyclohexene-1-acetic Acid 4-(Diethylamino)-2-butyn-1-yl Ester (Oxybutynin EP Impurity A) is the cyclohexyl analog of Oxybutynin (O868525), an inhibitor of proliferation and supresses gene expression in bladder smooth muscle cells.
