CAS: 949141-22-4 Molecular Formula: C21 H23 N O3 . Cl H Molecular Weight (g/mol): 373.87 Synonym: (11E)-11-[3-(Dimethylamino)propylidene]-6,11-dihydrodibenz[b,e]oxepin-2-acetic Acid Hydrochloride (1:1),(E)-Olopatadine Hydrochloride IUPAC Name: 2-[(11E)-11-[3-(dimethylamino)propylidene]-6H-benzo[c][1]benzoxepin-2-yl]acetic acid;hydrochloride SMILES: Cl.CN(C)CC\C=C\1/c2ccccc2COc3ccc(CC(=O)O)cc13