2-Methyl-3-nitro-4-(trifluoromethoxy)pyridine-6-carboxylic acid
3-Methyl-2-nitro-6-(trifluoromethoxy)pyridine-5-carboxylic acid
Ethyl 6-methyl-3-nitro-2-(trifluoromethoxy)pyridine-4-carboxylate
3-Methyl-2-nitro-5-(trifluoromethoxy)pyridine-4-carboxylic acid