(2-chloro-2-nitroacetyl)urea

1-azidonaphthalene

2,5-dioxopyrrolidine-1-carbonitrile

2-benzamidobenzoyl azide

1-[-but-2-en-1-yl]-3-methyl-1H-imidazol-3-ium azide

1-hexyl-3-methyl-1H-imidazol-3-ium azide

N-phenylbenzohydrazide

3-(3,4-difluorophenyl)-1,1-dioxoguanidine

1-(1,1-Difluoro-2-phenyl-2-trimethylsiloxy-ethyl)-2-phenylimidazole

1-Difluoromethyl-3-methylimidazoilum triflate

2-(1,2-dichloro-1,2,2-trifluoroethyl)thiophene