Synonyms: 2-Methyl-4-nitroimidazole, 2-Methyl-5-nitroimidazole, 2-Methyl-5-nitro-1H-imidazole, Metronidazole Benzoate Imp. B (EP), Tinidazole Imp. A (EP), Metronidazole Imp. A (EP), Tinidazole USP Related Compound A, Tinidazole USP RC A, Tinidazole Related Compound A, Metronidazole Benzoate Impurity B, Metronidazole Impurity A, Tinidazole Impurity A