6428-37-1

7-[(2,4-Diaminophenyl)azo]-3-[[4-[[4-[[6-[(2,4-diaminophenyl)azo]-1-hydroxy-3-sodiosulfo-2-naphthalenyl]azo]phenyl]amino]-3-sodiosulfophenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt