73287-63-5 Benzenesulfonic acid, 2,5-dichloro-4-((5-cyano-2,6-bis((2-hydroxyethyl)amino)-4-methyl-3-pyridinyl)azo)-, monosodium salt EINECS 277-359-7 Sodium 2,5-dichloro-4-((5-cyano-2,6-bis((2-hydroxyethyl)amino)-4-methyl-3-pyridyl)azo)benzenesulphonate