2-Naphthalenecarboxylic acid, 4,4'-methylenebis[3-hydroxy-, disodium salt 2-Naphthoic acid, 4,4'-methylenebis[3-hydroxy-, disodium salt 6640-22-8 Disodium methylenebis(2-hydroxy-3-naphthoate) Disodium pamoate NSC49174 Sodium pamoate