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