N,N'-BIS-(2-NITROPHENYL)-ETHYLENEDIAMINE

N,N'-BIS-(3,4-DICHLOROBENZYLIDENE)-ETHYLENEDIAMINE

N,N'-BIS-(4-DIMETHYLAMINOBENZYLIDENE)-1,4-PHENYLENEDIAMINE

N,N'-BIS-(4-METHYL-3-NITRO-BENZYL)-ISOPHTHALAMIDE

N,N'-BIS(1-METHYLOCTYL)-1,4-PHENYLENEDIAMINE DIHYDROCHLORIDE

N,N'-BIS(2-HYDROXY-5-METHYLPHENYL)-1,4-DIAZABUTADIENE

N,N'-BIS(3-CHLORO-4-METHYLPHENYL)FORMAMIDINE

N,N'-BIS(4-CHLOROBENZYLIDENE)-1,4-PHENYLENEDIAMINE

N,N'-BIS(4-METHOXYPHENYL)ISOPHTHALAMIDE

N,N'-Bis(benzyloxycarbonyl)guanidine

N,N'-BIS(CYCLOHEXYLOXYCARBONYL)-4-METHYL-1,3-PHENYLENEDIAMINE

N,N'-DI-P-TOLYL-3,6-BIS-P-TOLYLIMINO-CYCLOHEXA-1,4-DIENE-1,4-DIAMINE

N,N'-DIVANILLYLIDENEETHYLENEDIAMINE

N,N'-ETHYLENEBIS(N-(CHLOROMETHYL)-2,6-DIMETHOXYBENZAMIDE)

N,N'-HEXAMETHYLENEBIS(BENZAMIDE)