Direct Brown 161

[1,1'-Biphenyl]-3,3'-dicarboxylic acid, 4-[[4,5-dihydro-3-methyl-5-oxo-1-(6-sulfo-2-naphthalenyl)-1H-pyrazol-4-yl]azo]-4'-[[1-[[(2-methoxyphenyl)amino]carbonyl]-2-oxopropyl]azo]-, trisodium salt 4-Amino-2-[(2,4-diaminophenyl)azo]-5-[[3-[(2,4-diaminophenyl)azo]phenyl]azo]benzenesulfonic acid sodium salt Direct Brown 159 [1,1'-Biphenyl]-3,3'-dicarboxylic acid, 4-[(6-carboxy-1,7-dihydroxy-3-sulfo-2-naphthalenyl)azo]-4'-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-, tetrasodium salt 4-Amino-5-hydroxy-3-[[4'-[(2,4-diaminophenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-2,7-disulfonic acid disodium salt 3,5-Diamino-4-chloro-2-[[4'-[[2,6-diamino-3-methyl-5-[(4-sulfophenyl)azo]phenyl]azo]-1,1'-biphenyl-4-yl]azo]benzenesulfonic acid disodium salt Direct Brown 171 disodium 5-[[4'-[[2,6-diamino-3-methyl-5-[(4-sulphonatophenyl)azo]phenyl]azo][1,1'-biphenyl]-4-yl]azo]-3-methylsalicylate C.I. Direct Brown 166