Synonyms: 2-Naphthalenecarboxamide,4-[[2-chloro-5-[[(2,4,5-trichlorophenyl)amino]carbonyl]phenyl]azo]-3-hydroxy-N-1-naphthalenyl-(9CI); Benzanilide,2',4,4',5'-tetrachloro-3-[[2-hydroxy-3-(1-naphthylcarbamoyl)-1-naphthyl]azo]-(8CI); 4-[[2-Chloro-5-[(2,4,5-trichlorophenyl)carbamoyl]phenyl]azo]-3-hydroxy-N-(1-naphthyl)-2-naphthamide;C.I. Pigment Red 223