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