N,N'-DICARBOBENZYLOXY-L-ORNITHINE

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

N,N'-DIISOPROPYL-N,N'-DI(O-TOLYL)OXAMIDE

N,N'-TEREPHTHALYLIDENEBIS(3-FLUOROANILINE)

N,N'-TEREPHTHALYLIDENEDI-P-ANISIDINE

N,N-(2-HYDROXYETHYL)FORMAMIDE

N,N-BIS(2-(N-DODECYLCARBAMOYLOXY)ETHYL)-2-(4-CHLOROPHENOXY)ACETAMIDE

N,2-Dimethyl-4-nitroaniline

N,3-Dimethyl-3-piperidinecarboxamide hydrochloride

N,N'-(1,1'-BIPHENYL-4,4'-DIYL)BISOCTADECAMIDE

N,N'-(1,4-PHENYLENE)BIS(P-TOLUENESULFONAMIDE)

N,N'-(1,4-PHENYLENEDIMETHYLIDYNE)BIS(2-CHLORO-5-NITROANILINE)

N,N'-(1,4-PHENYLENEDIMETHYLIDYNE)BIS(3-CHLORO-O-ANISIDINE)

N,N'-(1,4-PHENYLENEDIMETHYLIDYNE)BIS(4-CHLOROANILINE)

N,N-dicyclohexyl-2-phenylacetamide