1,3-Naphthalenedisulfonic acid, 7-[(E)-[4-[[4-[(E)-[6-[(4-aminobenzoyl)amino]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]benzoyl]amino]-2-methylphenyl]azo]- 6104-56-9 (TRISODIUM SALT) AIDS-030522 AIDS030522 C.I. 28255 C.I. Direct Orange 74 C.I. Direct Orange 74, (*Trisodium salt*) NSC47770 (TRISODIUM SALT)