C5H15O2(OH)5, synthesized or occurring as a glycoside in the rind and bark of numerous plants, and used medicinally to treat abnormal capillary fragility.

• 槲皮苷，栎皮酮一种黄色粉末状的晶体化合物C5H15O2（OH）5，人工合成或以糖苷存在于许多植物的果皮及树皮中，在医药中用来治疗不正常的毛细血管脆弱