2-Naphthalenecarboxamide, 3-hydroxy-4-((5-chloro-4-methyl-2-sulfophenyl)azo)-N-(2-methoxyphenyl)-, manganese salt (2:1) 73384-91-5 Benzenesulfonic acid, 4-chloro-2-((2-hydroxy-3-(((2-methoxyphenyl)amino)carbonyl)-1-naphthalenyl)azo)-5-methyl-, manganese(2+) salt (2:1)