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![3,4-二甲基[2,3-b]-噻吩-2,5-二羧酸二乙酯结构式](https://www.chemicalbook.com/CAS/GIF/152487-69-9.gif)
| CAS号 : | 152487-69-9 |
精确质量 : | 312.04900 |
| 分子式 : | C14H16O4S2 |
logP : | 3.93300 |
| 分子量 : | 312.40400 |
PSA : | 109.08000 |
3,4-二甲基[2,3-b]-噻吩-2,5-二羧酸二乙酯 | |
Diethyl 3,4-Dimethylthieno[2,3-b]Thiophene-2,5-Dicarboxylate | |
152487-69-9 | |
C14H16O4S2 | |
312.40400 | |
109.08000 | |
3.93300 | |
312.04900 |
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1.599
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209.2ºC
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2.45E-07mmHg at 25°C
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134-136ºC
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1.281g/cm3
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422.2ºC at 760mmHg
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2934999090
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品名, 成分含量, 用途 |
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2934999090. 其他杂环化合物. 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% |
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2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
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2934999090. Other nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds. General tariff: |