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５氨基水杨酸（５ Ａ Ｓ Ａ） 及其前体药物是治疗和预防炎症性肠道疾病的常用药物。柳氮磺吡啶是最早使用的５ Ａ Ｓ Ａ 前体药物。现对近年来５ Ａ Ｓ Ａ 新前体药物的研究情况、作用特点以及临床试验结果等作一综述。
5-Aminosalicylic acid (5 A S A) and its prodrugs are commonly used drugs for the treatment and prevention of inflammatory bowel disease. Sulfasalazine is the earliest used 5-A S A prodrug. Now 5 A A A new prodrugs in recent years, research, characteristics and clinical trial results are reviewed.