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  • 發布時間:2023-03-24 13:14 原文鏈接: 牛蒡子甙的物理性質

      無色結晶粉末, 熔點110-112? 27D-51.5(c=2.0, 乙醇).UVλETOHmax nm(log ε):230(4.26), 280(3.63); IRγKBrmax cm-1: 3280-3480(OH), 1780(ν-內酯c=0), 1593, 1510(芳香環); MSm/e: 372, 221, 194, 178, 151, 137.

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