Einecs 288-422-3

sodium 3-[[5-[(diethylamino)sulphonyl]-2-methoxyphenyl]azo]-4-hydroxynaphthalene-1-sulphonate

3-[[5-[(Diethylamino)sulfonyl]-2-methoxyphenyl]azo]-4-hydroxy-1-naphthalenesulfonic acid sodium salt