BENZENESULFONIC ACID, 3-((4-((4-HYDROXYPHENYL)AZO)-5-METHOXY-2-METHYLPHENYL)AZO)-4-METHOXY-, MONOSODIUM SALT
benzenesulfonic acid, 3-((4-((4-hydroxyphenyl)azo)-5-methoxy-2-methylphenyl)azo)-4-methoxy-, monosodium salt