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