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