Methyl 3-fluoro-2-nitro-5-(trifluoromethoxy)pyridine-6-acetate
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