butylacetic acid

例句：

1. 1. Butyric acid is a compound found in the human digestive system.
   丁酸是一种存在于人体消化系统中的化合物。
2. 2. The bacteria that produce butyric acid are beneficial to the human body.
   产生丁酸的细菌对人体有益。
3. 3. Butyric acid has been shown to have antibacterial properties.
   丁酸已被证明具有抗菌性质。