| 英文名 | L-Malic acid |
|---|---|
| 英文别名 | S(-)-2-hydroxysuccinic acid |
| 类型 | 脂肪族化合物 |
| CAS号 | 97-67-6 |
| 物理性质 | M 134.1, m 104.5-106℃, [α]D20 -2.3o(c8.5, H2O), [α]D20 -30o(c 5.5, pyridine), pK125 3.46, pK225 5.10. |
| 提纯方法 | Crystallise S-malic acid (charcoal) from ethyl acetate/pet ether (b 55-56℃), keeping the temperature below 65℃. Or dissolve it by refluxing in fifteen parts of anhydrous diethyl ether, decant, concentrate to one-third volume and crystallise it at 0℃, repeatedly to constant melting point. [Beilstein 3 IV 1123.] |
| 相关文献 | 暂无权限 |
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