Methyl 3-fluoro-2-methoxy-5-(trifluoromethoxy)pyridine-6-carboxylate
Methyl 3-fluoro-2-methoxy-4-(trifluoromethoxy)pyridine-5-carboxylate
Methyl 6-fluoro-3-methoxy-4-(trifluoromethoxy)pyridine-2-carboxylate
6-Fluoro-3-methoxy-4-(trifluoromethoxy)pyridine-2-acetic acid