72749-76-9 5-[[2,4-Dihydroxy-5-[(4-nitrophenyl)azo]phenyl]azo]-4-hydroxy-3-[[6-sulfo-4-[(4-sulfo-1-naphthalenyl)azo]-1-naphthalenyl]azo]-2,7-naphthalenedisulfonic acid tetrasodium salt
72749-77-0 4,4-[[(9,10-Dihydro-9,10-dioxoanthracene)-1,4-diyl]diimino]bis[3-ethyl-5-methylbenzenesulfonic acid]disodium salt