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