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| CAS号 : | 501-98-4 |
精确质量 : | 164.04700 |
| 分子式 : | C9H8O3 |
logP : | 1.49000 |
| 分子量 : | 164.15800 |
PSA : | 57.53000 |
4-香豆酸 | |
p-Coumaric acid | |
501-98-4 | |
C9H8O3 | |
164.15800 | |
57.53000 | |
1.49000 | |
164.04700 |
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白色晶体
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177.3ºC
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346.1ºC at 760 mmHg
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214ºC
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1.329g/cm3
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Stable at room temperature in closed containers under normal storage and handling conditions.
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Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
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GHS07 | |
警告 | |
H315; H319; H335 | |
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S26-S37/39
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Xi
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R36/37/38
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2918290000
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HS: 2918290000 Other carboxylic acids with phenol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives |
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品名, 成分含量, 用途 |
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A.入境货物通关单 B.出境货物通关单 |
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R.进口食品卫生监督检验 S.出口食品卫生监督检验 |
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2918290000 其他含酚基但不含其他含氧基羧酸及其酸酐、酰卤化物、过氧化物和过氧酸及它们的衍生物。监管条件:AB(入境货物通关单,出境货物通关单)。增值税率:17.0%。退税率:9.0%。最惠国关税:6.5%。普通关税:30.0% |
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HS: 2918290000 other carboxylic acids with phenol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) VAT:17.0% MFN tariff:6.5% General tariff:30.0% |
1.其制备方法是以乙酰水杨酰氯为原料,在氯化镁存在下,在乙腈溶剂中与丙二酸二乙酯反应,再加入三乙胺,在0℃反应1h,得到(2-乙酰氧基苯甲酰基)丙二酸二乙酯生成物,然后在氢氧化钾/甲醇溶液中加热至50℃,反应3h,环合而得到产品。 | |
农药，杀鼠剂。4-羟基香豆素是抗凝血剂杀鼠剂杀鼠灵、杀鼠醚、溴敌隆、溴鼠灵、鼠得克、氟鼠灵、噻鼠灵、克鼠灵等的中间体，也可以在医药上制抗血凝药双香豆素乙酯、酮苄香豆素等。 |
