6406-52-6 4-Hydroxy-3-[[2-methyl-4-[(2-methylphenyl)azo]phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt
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