Methyl 4,5-difluoro-2-(trifluoromethoxy)pyridine-3-acetate
Methyl 4,5-diiodo-3-(trifluoromethoxy)pyridine-2-acetate
Methyl 6-(bromomethyl)-2-(difluoromethyl)-3-methoxypyridine-4-acetate
Methyl 3-(bromomethyl)-4-methyl-2-(trifluoromethoxy)pyridine-5-acetate