1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxy-3,5-diiodophenyl)- 2217-44-9 3',3'',5',5''-Tetraiodophenolphthalein 3,3-Bis(4-hydroxy-3,5-diiodophenyl)-1(3H)-isobenzofuranone 3,3-Bis(4-hydroxy-3,5-diiodophenyl)phthalide 386-17-4 4-18-00-01949 (Beilstein Handbook Reference) BRN 0351654 EINECS 206-857-9 Iodophene Iodophthalein Iodophthalein sodium free acid Jodphthaleinum Phenolphthalein, 3',3'',5',5''-tetraiodo-