1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxy-3-methylphenyl)-
o-Cresolphthalein
Phenolphthalein, 3′,3′′-dimethyl-
3,3-Bis(4-hydroxy-3-methylphenyl)-1(3H)-isobenzofuranone
Cresolphthalein
3,3-Bis(3-methyl-4-hydroxyphenyl)phthalide
3,3-Bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1-one