1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxy-2-methyl-5-(1-methylethyl)phenyl)- 125-20-2 3,3-Bis(4-hydroxy-5-isopropyl-o-tolyl)phthalide EINECS 204-729-7 NSC 2186 Phenolphthalein, 5',5''-diisopropyl-2',2''-dimethyl- Phenolphthalein, 5',5''-diisopropyl-2',2''-dimethyl- (8CI) THYMOLPHTHALEIN Thymophthalein