methyl crotonate

例句：

1. 1. This compound is a key intermediate in the synthesis of many pharmaceuticals.
   这种化合物是合成许多药品的关键中间体。
2. 2. The methyl crotonate was used as an anti-inflammatory agent in the treatment of rheumatoid arthritis.
   甲基丁酸甲酯用作治疗风湿性关节炎的抗炎药物。
3. 3. In organic synthesis, methyl crotonate is often used as a starting material for the preparation of other chemicals.
   在有机合成中，甲基丁酸甲酯常被用作制备其他化学品的起始原料。