SEARCH Articles Figures Tables 4 5)-Brom-5 -nitro-imidazol Imidazole 1- alkyl-5-nitro Imidazole 2- methyl-4 -nitro Imidazole 2-nitro Imidazole 4-nitro-1-phenyl Imidazole 4-nitro-5-azido Imidazole 5- alkoxy-4-nitro Imidazoles 4-nitro-, tautomerism Imidazoles nitro-, isomeric Imidazoles, nitro derivatives Imidazoles, nitro-, bromination