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