Synonyms: Chromate(3-),[4-amino-5-hydroxy-6-[(2-hydroxy-5-nitrophenyl)azo]-1,7-naphthalenedisulfonato(4-)][2-[[5-(aminosulfonyl)-2-hydroxyphenyl]azo]-3-oxo-N-phenylbutanamidato(2-)]-,trisodium (9CI); 1,7-Naphthalenedisulfonic acid,4-amino-5-hydroxy-6-[(2-hydroxy-5-nitrophenyl)azo]-, chromium complex;Butanamide, 2-[[5-(aminosulfonyl)-2-hydroxyphenyl]azo]-3-oxo-N-phenyl-,chromium complex