1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxyphenyl)-, compd. with 2-(diethylamino)ethanol (1:1) 3,3-Bis(4-hydroxyphenyl)phthalide, compound with 2-(diethylamino)ethanol (1:1) 67874-86-6 EINECS 267-514-7 Phenolphthalein diethylaminoethanol salt