Synonyms: | 3,3-Bis(4-methoxyphenyl)-1(3H)-isobenzofuranone;3,3-Bis(4-methoxyphenyl)-1,3-dihydroisobenzofuran-1-one;4,4'-[1(3H)-Oxoisobenzofuran-3-ylidene]bisanisole;4,4'-[3-Oxoisobenzofuran-1(3H)-ylidene]bis(1-methoxybenzene);Phenolphthalein dimethyl ether |