Name：Olopatadine hydrochloride

Intermediate name:(Z)-11-[3-(Dimethylamino)propylidene]-6,11-dihydrodibenz[b,e]oxepin-2-acetic acid hydrochloride
Cas No.:140462-76-6

Structure:

Intermediate name:4-[(2-carboxyphenyl)methoxy]benzeneacetic acid
Cas No.:55453-89-9

Structure:

Intermediate name: 6,11-dihydro-11-oxo-dibenz[b,e]oxepin-2-acetic acid
Cas No.:55453-87-7

Structure:

Intermediate name:[3-(dimethylamino)propyl]triphenylphosphonium bromide hydrobromide
Cas No.：27710-82-3

Structure:

Intermediate name:6,11-dihydro-11-oxo-dibenz[b,e]oxepin-2-acetate,methyl ester
Cas No.:55689-64-0

Structure: