C.I. 21100; C.I. Pigment Yellow 13; C.I. Pigment Yellow 13 (7CI,8CI); C.I. Pigment Yellow 13 (VAN) (8CI); CI 21100; -; 2,2'-[(3,3'-dichlorobiphenyl-4,4'-diyl)di(E)diazene-2,1-diyl]bis[N-(2,4-dimethylphenyl)-3-oxobutanamide]; (2E,2'E)-2,2'-[(3,3'-dichlorobiphenyl-4,4'-diyl)di(1E)hydrazin-2-yl-1-ylidene]bis[N-(2,4-dimethylphenyl)-3-oxobutanamide]