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