Methyl 3-fluoro-5-nitro-2-(trifluoromethoxy)pyridine-4-acetate
Methyl 2-(aminomethyl)-4-cyano-5-(trifluoromethoxy)pyridine-3-acetate
Methyl 4-cyano-3-methoxy-2-(trifluoromethoxy)pyridine-6-carboxylate
Methyl 2-(aminomethyl)-3-cyano-6-(trifluoromethoxy)pyridine-5-acetate