Abutment 发表于 2025-3-30 09:26:27

Introduction,for a group of borderline compounds leaves very few compounds unclassified. A few otherwise impeccable alkaloids, such as rutaecarpine and ricinine, that have electron-withdrawing functional groups either adjacent to or conjugated with their nitrogen atoms, do not show the characteristic of basicity.

龙卷风 发表于 2025-3-30 16:22:30

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TIA742 发表于 2025-3-30 17:28:23

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白杨鱼 发表于 2025-3-30 21:44:11

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