Methyl 2-nitro-5-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 2-nitro-3-(trifluoromethoxy)pyridine-4-carboxylate
3-Nitro-5-(trifluoromethoxy)pyridine-2-carboxylic acid
5-Fluoro-4-nitro-2-(trifluoromethoxy)pyridine
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