N,N'-BIS-(1-PHENYL-ETHYL)-ISOPHTHALAMIDE

N,N'-BIS-(2-HYDROXYETHYL)-2,5-DIMETHYLPIPERAZINE

N,N'-BIS-(2,6-DIMETHYL-PHENYL)-ISOPHTHALAMIDE

N,N'-BIS-(3,4,5-TRIMETHOXYBENZYLIDENE)-ETHYLENEDIAMINE

N,N'-BIS-(4-DIMETHYLAMINO-BENZYLIDENE)-HEXANE-1,6-DIAMINE

N,N'-BIS-(4-METHOXY-PHENYL)-5-NITRO-ISOPHTHALAMIDE

N,N'-BIS-TRITYL-HEXANE-1,6-DIAMINE

N,N'-BIS(2-AMINOPHENYL)OXAMIDE

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

N,N'-BIS(3-(TRIFLUOROMETHYL)PHENYL)-1,10-DECANEDIAMIDE

N,N'-BIS(4-ACETAMIDOPHENOXYCARBONYL)-2,4-TOLUENEDIAMINE

N,N'-BIS(4-FLUOROPHENYL)OXAMIDE

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

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

N,N'-BIS(CARBOBENZYLOXY)-L-LYSYL-L-TYROSINAMIDE