121158-53-0 1H-Imidazol-2-amine, N-(4-azido-2,6-diethylphenyl)-4,5-dihydro- 2-((4-Azido-2,6-diethylphenyl)imino)imidazolidine 2-(2,6-Diethyl-4-azidophenylimino)imidazolidine NC 5Z NC-5Z