2,7-Naphthalenedisulfonic acid, 4-[[4-(acetylamino)phenyl]azo]-3-hydroxy-, disodium salt 5864-81-3 Azo Grenadine L C.I. 16130 C.I. Acid Red 23 C.I. Acid Red 23, disodium salt Italanafuchsine NSC45200