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