Synonyms:
4,4'-azo-3-hydroxynaphthalene-1-sulphonate ; 1,2-naphthoxydiazde-4-sulfonicacid ; 1,2-naphthoxydiazo-4-sulfonic acid ; 1-diazo-2-naphthol-4 ; 4-diazonio-3-hydroxynaphthalene-1-sulfonate ; 4,4'-azo-3-hydroxynaphthalene-1-sulfonate ; 1 diazo-2-naphthol-4-sulphonic acid ; 1,2-diazoxynaphthalene-4-sulfnic acid ; 1-diazo-2-naphthol-4-sulfonic acid powder ; 1-diazo-2-naphthol-4-sulfonic acid