英文名称:trisodium 4-hydroxy-7-[[[[5-hydroxy-7-sulfonato-6-[(o-tolyl)azo]-2-naphthyl]amino]carbonyl]amino]-3-[(6-sulphonato-2-naphthyl)azo]naphthalene-2-sulphonate; C.I. 29180; C.I. Direct Red 73, trisodium salt (8CI); trisodium 6-[(2Z)-2-{6-[({(6E)-6-[2-(2-methylphenyl)hydrazinylidene]-5-oxo-7-sulfonato-5,6-dihydronaphthalen-2-yl}carbamoyl)amino]-1-oxo-3-sulfonatonaphthalen-2(1H)-ylidene}hydrazinyl]naphthalene-2-su