C.I. Direct Blue 26, trisodium salt
CAS No. 7082-31-7
trisodium (3E)-5-hydroxy-3-{2-[(7Z)-7-(2-{4'-[(2Z)-2-(8-hydroxy-1-oxo-4-sulfonatonaphthalen-2(1H)-ylidene)hydrazinyl]-3,3'-dimethylbiphenyl-4-yl}hydrazinylidene)-8-oxo-6-sulfonato-7,8-dihydronaphthalen-2-yl]hydrazinylidene}-4-oxo-3,4-dihydronaphthalene-1-