pyrazolidone

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物的关键中间体。
2. 2. The drug was effective in treating chronic pain and depression.
   这种药物在治疗慢性疼痛和抑郁症方面是有效的。
3. 3.Pyrazine oxide has been shown to have antimicrobial properties.
   吡唑啉氧化物已被证明具有抗菌性质。