N,N'-DI(1-NAPHTHYL)UREA

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

N,N'-DICARBOBENZYLOXY-L-CYSTINE

N,N'-DIETHYL-2-BUTYNE-1,4-DIAMINE

N,N'-DIISOBUTYL-TEREPHTHALAMIDE

N,N'-TEREPHTHALYLIDENEBIS(3-BROMOANILINE)

N,N'-TEREPHTHALYLIDENEBIS(NICOTINIC HYDRAZIDE)

N,N',N\",N\"-TETRAACETYLGLYCOLURIL

N,N-BIS-(4-BROMO-PHENYL)-BENZAMIDE

N,2-DIMETHYL-1,3-BENZODIOXOLE-2-METHANAMINE HYDROBROMIDE

N,3-diethylaniline hydrochloride

N,5-DIPHENYL-4,5-DIHYDRO-3-ISOXAZOLECARBOXAMIDE

N,N'-(1,4-CYCLOHEXYLENEDIMETHYLENE)-DIMALEAMIC ACID

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

N,N'-(1,4-PHENYLENEDIMETHYLIDYNE)BIS(3-AMINOPHENOL)