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