这个词是什么意思？
A narcotic analgesic similar to MEPERIDINE; it exists in four stereoisomers, two of which, the beta (isopromedol) and the gamma (trimeperidine) are active.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D011396 · MeSH 2026。
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