C.I. 22311; C.I. 22 311; C.I. Direct Brown 2, disodium salt; C.I. Direct Brown 2; Direct Brown 2; 5-[[4'-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo][1,1'-biphenyl]-4-yl]azo]-2-hydroxybenzoic acid, disodium salt; benzoic acid,5-((4'-((7-amiono-1-hydroxy-3-sulfo-2-naphthyl)azo)(1,1'-biphenyl)-4-yl)azo)-2-hydroxy-,disodium salt; diamine brown; diazine brown; diphenyl brown; direct fast brown; DIRECT FAST BROWN M; brown m; chloramine brown m; chrome leather brown m; phenamine brown mb; union brown m; disodium (3E)-3-({4'-[(2Z)-2-(7-amino-1-oxo-3-sulfonatonaphthalen-2(1H)-ylidene)hydrazino]biphenyl-4-yl}hydrazono)-6-oxocyclohexa-1,4-diene-1-carboxylate; (3Z)-3-({4'-[(2E)-2-(7-amino-1-oxo-3-sulfonaphthalen-2(1H)-ylidene)hydrazino]biphenyl-4-yl}hydrazono)-6-oxocyclohexa-1,4-diene-1-carboxylic acid; Direct Dark Brown M
