6406-35-5 2-[2-[4-[[4-[(4-Ethoxyphenyl)azo]-7-sodiosulfo-1-naphthalenyl]azo]phenyl]benzothiazol-6-yl]-6-methylbenzothiazole-7-sulfonic acid sodium salt
6406-50-4 2-Hydroxy-5-[[4-[(1-hydroxy-5-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]benzoic acid sodium salt