dibutilnaftalensulfonska kiselina, spoj s 4-(fenilazo)benzen-1,3-diaminom (1:1) [2]
trinatrium-4-amino-5-hydroxi-3-[(2-hydroxietylsulfonyl)-fenylazo]-6-[(E)-2-sulfonato-4-(vinylsulfonyl)fenylazo]naftalen-2,7-disulfonat;