Acétate de 5-{(E)-[4-(diéthylamino)phényl]diazényl}-1,4-diméthyl-4H-1,2,4-triazol-1-ium, 5-[[4-(diethylamino)phenyl]azo]-1,4-dimethyl-1H-1,2,4-triazolium acetate
, 2-Hydroxy-5-[(E)-{4-[(E)-(4-sulfonatophényl)diazényl]phényl}diazényl]benzoate de disodium, 5-[[4-[(4-sulphophenyl)azo]phenyl]azo]salicylic acid, sodium salt