1,3-Naphthalenedisulfonic acid, 7-((4-amino-5-methoxy-2-methylphenyl)azo)- 7-((4-Amino-5-methoxy-2-methylphenyl)azo)naphthalene-1,3-disulphonic acid 7-((4-Amino-5-methoxy-o-tolyl)azo)-1,3-naphthalenedisulfonic acid 86-63-5 EINECS 201-687-1