名词
中文翻译：Unknown
同义词：
['pro-drug', 'pro-drug analogue', 'pro-drug precursor']
例句：
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1. The study focused on the effects of propionin on human health.
该研究关注前体化合物对人类健康的影响。
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2. Propioninal was used as a preservative in food packaging.
丙酮酸用作食品包装的防腐剂。
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3. The drug's active ingredient is a propionin derivative.
该药物的活性成分是一种前体衍生物。