Ethyl 3-(difluoromethyl)-2-methoxy-5-nitropyridine-6-carboxylate
3-(Difluoromethyl)-4-methoxy-6-(trifluoromethyl)pyridine-2-carboxaldehyde
Methyl 3-(difluoromethyl)-6-methyl-4-nitropyridine-2-carboxylate
Methyl 5-(difluoromethyl)-2-methoxy-3-(trifluoromethyl)pyridine-4-carboxylate