Methyl 5-methyl-2-nitro-4-(trifluoromethoxy)pyridine-3-acetate
Methyl 6-(difluoromethyl)-4-methoxy-3-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 4-methyl-5-nitro-2-(trifluoromethoxy)pyridine-3-acetate
Methyl 4-methyl-3-nitro-5-(trifluoromethoxy)pyridine-2-acetate