83400-20-8 3-[[4-[7-[(5-chloro-2,6-difluoro-4-pyrimidinyl)amino]-5,9-disulpho-2H-naphtho[1,2-d]triazol-2-yl]-2-sulphophenyl]azo]-1,2-dihydro-6-hydroxy-2-oxoisonicotinic acid, sodium salt
83400-13-9 4-(benzoylamino)-6-[[2-(ethylsulphonyl)-7-sulphobenzothiazol-6-yl]azo]-5-hydroxynaphthalene-1,7-disulphonic acid, potassium sodium salt