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