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| CAS号 : | 90-33-5 |
精确质量 : | 176.04700 |
| 分子式 : | C10H8O3 |
logP : | 1.80700 |
| 分子量 : | 176.16900 |
PSA : | 50.44000 |
4-甲基伞形酮 | |
4-methylumbelliferone | |
90-33-5 | |
C10H8O3 | |
176.16900 | |
50.44000 | |
1.80700 | |
176.04700 |
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固体
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174.5ºC
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377.4ºC at 760 mmHg
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188.5-190 °C(lit.)
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slightly soluble
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1.319 g/cm3
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Stable. Combustible. Incompatible with strong oxidizing agents.
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-20ºC Freezer
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GN7000000
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2
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S26-S37/39
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Xn
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R20/21/22; R36/37/38
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2933990090
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2933990090. 其他仅含氮杂原子的杂环化合物. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:20.0% | |
2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
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暂时无法加载合成路线，请稍后刷新重试 |
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<p>由间苯二酚与乙酰乙酸乙酯经环合反应而得。将浓硫酸冷至10℃以下,于搅拌下滴加由间苯二酚与乙酰乙酸乙酯配成的溶液,滴完后放置12h。然后将反应物投入有碎冰的水中,将析出的沉淀滤出,用稀氢氧化钠溶液及稀硫酸精制而得成品。</p> | |
<p>该品为利胆药，又是抗过敏药色甘酸钠的中间体。</p> |
