(6E)-4-benzamido-5-oxo-6-[[1-sulfonato-6-(2-sulfonatooxyethylsulfonyl)naphthalen-2-yl]hydrazinylidene]naphthalene-1,7-disulfonate;tetrasodium 4-(benzoylamino)-5-hydroxy-6-[[1-sulphonato-6-[[2-(sulphonatooxy)ethyl]sulphonyl]-2-naphthyl]azo]naphthalene-1,7-disulphonate;1,7-Naphthalenedisulfonicacid,4-(benzoylamino)-5-hydroxy-6-[2-[1-sulfo-6-[[2-(sulfooxy)ethyl]sulfonyl]-2-naphthalenyl]diazenyl]-,sodium salt (1:4);4-(Benzoylamino)-5-hydroxy-6-[[1-(sodiooxysulfonyl)-6-[[2-(sodiooxysulfonyloxy)ethyl]sulfonyl]-2-naphthalenyl]azo]-1,7-naphthalenedisulfonic acid disodium salt
