2,7-Naphthalenedisulfonic acid, 4-amino-6-[[4'-[(4-amino-7-sulfo-1-naphthalenyl)azo][1,1'-biphenyl]-4-yl]azo]-5-hydroxy-3-[(3-nitrophenyl)azo]-, trisodium salt AIDS-030553 AIDS030553 NSC79742 Naphthalenedisulfonic acid der.