Methyl 2-cyano-5-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-3-acetate
Methyl 2-cyano-4-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-3-acetate
Ethyl 3-cyano-6-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 2-cyano-3-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-5-acetate