Synonyms: dirubidium 4,4'-methylenebis[3-hydroxy-2-naphthoate];4,4'-Methylenebis(3-hydroxy-2-naphthalenecarboxylic acid)dirubidium salt;2-Naphthalenecarboxylic acid, 4,4'-methylenebis(3-hydroxy-, dirubidium salt;2-Naphthalenecarboxylic acid, 4,4'-methylenebis(3-hydroxy-, rubidium salt (1:2);Einecs 269-332-3