alstonine相关的网络例句
查询词典 alstonine
- 与 alstonine 相关的网络例句 [注：此内容来源于网络，仅供参考]
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Karrer and Enslin reported that the structure of alstyrine S_(19H_(22)N_2, a selenium- dehydrogenation-degradation product obtained by Sharp from the alkaloid alstonine, is identical with that of corynanthyrine,α-[2-(4, 5 diethylpyridyl)]-β-ethylindole, despite the fact that the melting points of these two substances have a 5°difference.
前者的紫外線吸收光譜與阿爾斯泰令(alstyrine，係一種由西阿斯木鹼經硒降解後的產物)的吸收光譜極為類似；且二者有一種相同的顏色反應。
- 推荐网络例句
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More direct, directer ; most direct, directest
径直的，笔直的
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Do you know how to use a chain saw?
你知道如何使用链锯吗？
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This is close to the cost of the purchase price.
这样的收购价已接近成本。