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