N-VANILLYLIDENE-2,4-XYLIDINE

N-VERATRYLIDENE-M-TOLUIDINE

N,N'-(1,4-PHENYLENEDIMETHYLIDYNE)DI-P-ANISIDINE

N,N'-(2,4,6-TRIMETHYL-1,3-PHENYLENE)BIS(2-CHLOROACETAMIDE)

N,N'-(4-METHYL-1,3-PHENYLENE)BIS(O-CARBAMOYLACETONE OXIME)

N,N'-(METHYLENEDI-4,1-PHENYLENE)BIS(2-METHYL-1-PIPERIDINECARBOXAMIDE)

N,N'-BIS-(4-PHENOXY-PHENYL)-ISOPHTHALAMIDE

N,N'-BIS(1-METHYLHEPTYL)-1,4-PHENYLENEDIAMINE DIHYDROCHLORIDE

N,N'-BIS(2-CHLORO-5-(TRIFLUOROMETHYL)PHENYL)-1,4-DIAZABUTADIENE

N,N'-DIMETHYLDITHIOOXAMIDE

N,N'-ETHYLENEBIS(TETRADECANAMIDE)

N,N'-HEXAMETHYLENEBIS(ISOPROPYL CARBAMATE)

N,N'-METHYLENEBIS(4-ETHOXYANILINE)

N,N-Bis(2-chloroethyl)-p-toluenesulfonamide

N,N-DIBENZYL-N',N'-DI-TERT-BUTYL-1,4-DIAMINO-2-BUTENE