Synonyms: 5280-74-0;EINECS 226-105-3;AC1NUQZ6;C.I. Pigment Orange 31;(4Z)-N-[2-chloro-4-[3-chloro-4-[[(4E)-4-[(2-chlorophenyl)hydrazinylidene]-3-oxonaphthalene-2-carbonyl]amino]phenyl]phenyl]-4-[(2-chlorophenyl)hydrazinylidene]-3-oxonaphthalene-2-carboxamide;12286-58-7;2-Naphthalenecarboxamide, N,N'-(3,3'-dichloro(1,1'-biphenyl)-4,4'-diyl)bis(4-((2-chlorophenyl)azo)-3-hydroxy-;2-Naphthalenecarboxamide, N,N'-(3,3'-dichloro(1,1'-biphenyl)-4,4'-diyl)bis(4-(2-(2-chlorophenyl)diazenyl)-3-hydroxy-;2-Naphthalenecarboxamide, N,N'-(3,3'-dichloro[1,1'- biphenyl]-4,4'-diyl)bis[4-[(2-chlorophenyl)azo]-3 -hydroxy-;71598-23-7;N,N'-(3,3'-Dichloro(1,1'-biphenyl)-4,4'-diyl)bis(4-((2-chlorophenyl)azo)-3-hydroxynaphthalene-2-carboxamide)