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