4-Amino-6-((4'-((2-amino-8-hydroxy-6-sulfo-1-naphthyl)diazenyl)[1,1'-biphenyl]-4-yl)diazenyl)-5-hydroxy-3-((4-(hydroxy(oxido)amino)phenyl)diazenyl)-2,7-naphthalenedisulfonic acid 6949-19-5 AIDS-125217 AIDS125217 NSC65855