16508-79-5 2-Naphthalenecarboxylic acid, 3-hydroxy-4-(phenylazo)- (9CI) 27757-79-5 3-Hydroxy-4-(phenylazo)-2-naphthoic acid 6371-76-2 Brilliant lake red R C.I. Pigment Red 64 (8CI) EINECS 248-638-0 NSC 11713