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