Synonyms:
4,4'-[(3-oxo-1,3-dihydroisobenzofuran)-1,1-diyl]bis(2,5-dimethylphenol) ; 3,3-bis(4-hydroxy-2,5-dimethylphenyl)-1(3h)-isobenzofuranone ; 3,3-bis(4-hydroxy-2,5-xylyl)phthalide ; 3,3-bis(4-hydroxy-2,5-dimethylphenyl)-2-benzofuran-1(3h)-one ; p-xylenolphthaleine ; 3,3-bis(4-hydroxy-2,5-dimethylphenyl)isobenzofuran-1(3h)-one ; p-xylenolphthalein(6ci,7ci) ; p-xylenolphthalein ; p-xylenolphthalein (ph 9.0-10.5) ; 3,3-bis(2,5-dimethyl-4-hydroxyphenyl)isobenzofuran-1(3h)-one ; 2',5',2'',5''-tetramethylphenolphthalein ; 1(3h)-isobenzofuranone,3,3-bis(4-hydroxy-2,5-dimethylphenyl)-