Quinaprilat 是奎那普利的活性代谢产物和一种ACE（血管紧张素转换酶）抑制剂。该化合物防止血管紧张素I催化转化为血管紧张素II。血管紧张素II是有效的血管收缩剂，通过阻止其形成，血管扩张作用随着毛细血管血容量的增加而发生。 Quinaprilat is the active metabolite of Quinapril and a ACE (angiotensin converting enzyme) inhibitor. This compound prevents the catalyzed conversion of angiotensin I to angiotensin II. Angiotensin II is a potent vasoconstrictor, and by preventing its formation, vasodilation occurs along with increased capillary blood volume.