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