1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxy-1-naphthalenyl)-
Phthalide, 3,3-bis(4-hydroxy-1-naphthyl)-
1,1′-Naphthol-4,4′-phthalein
3,3-Bis(4-hydroxy-1-naphthalenyl)-1(3H)-isobenzofuranone
α-Naphtholphthalein
Di-p-α-Naphtholphthalide
p-α-Naphtholphthalein
1-Naphtholphthalein
3,3-Bis(4-hydroxy-1-naphthyl)-1,3-dihydroisobenzofuran-1-one
Naphtholphthalein blue
3,3-Bis(4-hydroxy-1-naphthyl)phthalide
3,3-Bis(4-hydroxynaphthalen-1-yl)-2-benzofuran-1-one