2-[2,5-Dichloro-4-(4-diethylamino-2-methylphenylazo)phenylsulfonylamino]ethanesulfonic acid sodium salt

sodium 2-[[[2,5-dichloro-4-[[4-(diethylamino)-2-methylphenyl]azo]phenyl]sulphonyl]amino]ethanesulphonate

Ethanesulfonic acid, 2-[[[2,5-dichloro-4-[[4-( diethylamino)-2-methylphenyl]azo]phenyl]sulfonyl]amino ]-, monosodium salt