N,N′-Bis(4-morpholinylmethyl)urea

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

N,N'-BIS(CARBOXYMETHYL)DITHIOOXAMIDE

N,N'-DI-SEC-BUTYL-N,N'-DI((3-TRIFLUOROMETHYL-PH)-CARBAMOYL)-1,4-PHENYLENEDIAMINE

N,N'-DIBENZYL-N,N'-DI-TERT-BUTYLOXAMIDE

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

N,N'-DIETHYL-N,N'-DIPHENYL-ISOPHTHALAMIDE

N,N'-TEREPHTHALYLIDENEBIS(2-METHYL-4-NITROANILINE)

N,N'-TEREPHTHALYLIDENEDI-P-ANISIDINE

N,N-Bis[2-(4-pyridinyl)ethyl]hydroxylamine

N,2-dimethyl-1-phenylcyclohexanamine hydrochloride

N,3-diethylaniline hydrochloride

N,N'-(1,2-ETHYLENE)BIS(4-AMINOMETHYLENE)-3-METHYL-1-PH-2-PYRAZOLINE-5-THIONE

N,N'-(1,4-PHENYLENEDIMETHYLIDYNE) BIS((3-TRIFLUOROMETHYL)ANILINE)

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