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| CAS号 : | 156-38-7 |
精确质量 : | 152.04700 |
| 分子式 : | C8H8O3 |
logP : | 1.01930 |
| 分子量 : | 152.14700 |
PSA : | 57.53000 |
对羟基苯乙酸 | |
4-hydroxyphenylacetic acid | |
156-38-7 | |
C8H8O3 | |
152.14700 | |
57.53000 | |
1.01930 | |
152.04700 |
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白色或淡黄色结晶粉末
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177.6ºC
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346.6ºC at 760 mmHg
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148-151 °C(lit.)
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1.319 g/cm3
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2.15E-05mmHg at 25°C
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Stable at room temperature in closed containers under normal storage and handling conditions.
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Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
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AI2680000
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3
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S26-S36-S24/25
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2918290000
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Xi
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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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<p>1.由对氨基苯乙酸重氮化、水解而得。将对氨基苯乙酸与碱溶液配制成钠盐，再加入硫酸。冷至0℃，控制温度在0-5℃滴加硝酸钠溶液，加毕反应0.5h。。将所得的重氮液滴加至90-95℃的稀硫酸中，约1h滴完，再继续反应1h。反应液经脱色过滤，冷却后用乙酸乙酯提取，提取液回收乙酸乙酯后即得成品。收率约85%。
2.3-氟对羟基苯乙酸
<br>2. 烟草：OR，41；FC，54；BU，26。</p> | |
<p>有机合成中间体，用于生产β-受体阻滞药阿替洛尔和葛根黄豆甙元有效成分－4,7-二羟基异黄酮的合成；还可用作农药中间体。</p> |
