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