Methyl 2-cyano-3-hydroxy-6-(trifluoromethoxy)pyridine-5-acetate
4-(Bromomethyl)-6-cyano-2-methyl-3-(trifluoromethoxy)pyridine
Methyl 2-cyano-3-hydroxy-5-(trifluoromethoxy)pyridine-4-acetate
4-(Bromomethyl)-2-cyano-5-methyl-3-(trifluoromethoxy)pyridine