N,N'-BIS(2-DIETHYLAMINOETHOXYCARBONYL)-1,6-HEXAMETHYLENEDIAMINE

N,N'-BIS(2-HYDROXYETHYL)-TEREPHTHALAMIDE

N,N'-BIS(4-ETHOXYPHENYL)-1,10-DECANEDIAMIDE

N,N'-BIS(4-HYDROXYPHENYL)-1,4-DIAZABUTADIENE

N,N'-BIS(5-CHLORO-2-METHOXYPHENYL)ISOPHTHALAMIDE

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

N,N'-BIS(CARBOBENZYLOXY)LYSYLVALINE METHYL ESTER

N,N'-DI-O-TOLYL-ETHANE-1,2-DIAMINE

N,N'-DI(P-TOLYL)FORMAMIDINE

N,N'-DIBENZYL-N,N'-DIMETHYLOXAMIDE

N,N′-Dicyclohexyl-N-(1H-indol-3-ylacetyl)urea

N,N'-DIETHYL-N,N'-DI(M-TOLYL)TEREPHTHALAMIDE

N,N'-DIISOPROPYL-N,N'-DIPHENYLTEREPHTHALAMIDE

N,N'-TEREPHTHALYLIDENEBIS(4-AMINOSALICYLIC ACID)

N,N'-TEREPHTHALYLIDENEDI-P-TOLUIDINE