3-(Difluoromethyl)-6-nitro-2-(trifluoromethoxy)pyridine-5-carbonyl chloride
3-Methoxy-4-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-2-carboxylic acid
5-(Difluoromethyl)-2-nitro-3-(trifluoromethoxy)pyridine-6-carbonyl chloride
4-Methoxy-6-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-acetonitrile