New Red; New Red Pigment; 2,7-Naphthalenedisulfonic acid, 5-(acetylamino)-4-hydroxy-3-[2-(4-sulfophenyl)diazenyl]-, sodium salt (1:3); 2,7-Naphthalenedisulfonic acid, 5-(acetylamino)-4-hydroxy-3-[(4-sulfophenyl)azo]-, trisodium salt (9CI); 2,7-Naphthalenedisulfonic acid, 5-(acetylamino)-4-hydroxy-3-[(E)-2-(4-sulfophenyl)diazenyl]-, sodium salt (1:3)
