2-(4-(4-((1-Acetylacetonyl)azo)-2-sulphostyryl)-3-sulphophenyl)-2H-naphtho(1,2-d)triazole-5-sulphonic acid 24681-18-3 2H-Naphtho(1,2-d)triazole-5-sulfonic acid, 2-(4-(4-((1-acetylacetonyl)azo)-2-sulfostyryl)-3-sulfophenyl)- 2H-Naphtho(1,2-d)triazole-5-sulfonic acid, 2-(4-(4-((2,4-dioxopent-3-yl)azo)-2-sulfostyryl)-3-sulfophenyl)- EINECS 246-400-0