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