Tolterodine Propanoic Acid Impurity (R)-Isomer 

Chemical Name: (R)-Tolterodine Propionic Acid Impurity ; (R)-3-(2-Hydroxy-5-methylphenyl)-3-phenylpropanoic acid ; (R)-3-(2-hydroxy-5-methylphenyl)-3-phenylpropanoic acid;

Smile: OC(C[C@](C1=C(O)C=CC(C)=C1)([H])C2=CC=CC=C2)=O