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