Synonyms: | PHENOLTETRACHLOROPHTHALEIN;4,5,6,7-tetrachlorophenolphthalein;4,5,6,7-tetrachloro-3,3-bis(4-hydroxyphenyl)phthalide;3,3-Bis(4-hydroxyphenyl)-4,5,6,7-tetrachloroisobenzofuran-1(3H)-one;4,5,6,7-Tetrachloro-3,3-bis(4-hydroxyphenyl)isobenzofuran-1(3H)-one;1(3H)-Isobenzofuranone, 4,5,6,7-tetrachloro-3,3-bis(4-hydroxyphenyl)- |