2-(Difluoromethyl)-4-methoxy-3-nitro-6-(trifluoromethyl)pyridine
2-(Difluoromethyl)-6-methoxy-3-nitropyridine-4-carboxaldehyde
6-(Difluoromethyl)-3-methoxy-2-nitropyridine-4-carboxaldehyde
2-(Difluoromethyl)-5-methoxy-4-nitropyridine-3-carboxaldehyde