Percent yield is the ratio of the actual yield to the theoretical yield, expressed as a percentage. It measures how efficient a reaction or process is at producing the desired product. A percent yield well below 100% indicates losses through side reactions, incomplete reaction, or losses during work-up.

产率是实际产量与理论产量之比,以百分数表示。它衡量某反应或过程生成目标产物的效率。产率远低于 100% 表明因副反应、反应不完全或后处理损失而造成了物料流失。