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