Methyl 2-(bromomethyl)-5-(difluoromethyl)-3-methoxypyridine-6-carboxylate
Methyl 2-(bromomethyl)-3-(difluoromethyl)-4-methoxypyridine-6-carboxylate
Methyl 6-(bromomethyl)-4-(difluoromethyl)-3-methoxypyridine-2-carboxylate
3-(Bromomethyl)-6-(difluoromethyl)-2-methoxypyridine-4-carboxylic acid