4-Amino-6-[(4-{4-[(8-amino-1-hydroxy-5,7-disulfo(2-naphthyl))diazenyl]-3-methoxyphenyl}-2-methoxyphenyl)diazenyl]-5-hydroxynaphthalen-1,3-disulfonic acid AIDS-087508 AIDS087508 Chicago Sky Blue 60 ND-8731 NSC631567 (TETRASODIUM SALT)