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