英语词典化工词典

4H-1-Benzopyran-4-one,2-(3,4-dimethoxyphenyl)-5-hydroxy-6,7-dimethoxy-

4H-1-Benzopyran-4-one,2-(3,4-dimethoxyphenyl)-5-hydroxy-6,7-dimethoxy-


  • 中文别名:5-羟基-3\',4\',6,7-四甲氧基黄酮
  • 英文别名:2-(3,4-dimethoxyphenyl)-5-hydroxy-6,7-dimethoxychromen-4-one;
    5-demethylsinensetin;
    5-Hydroxy-3',4',6,7-tetramethoxyflavone;
    HTMF;
    3'-O-methyleupatorin;
    6,7,4',5'-tetramethoxy-5-monohydroxyflavone;
    5-desmethylsinensetin 
  • CAS No.:21763-80-4
  • 分子式:C19H18O7
  • 分子量:0
  • 精确分子量:358.10500
  • PSA:87.36000
  • InChI:The Key: QEWSAPKRFOFQIU-UHFFFAOYSA-N
  • 分子结构式:

物化性质

密度:
1.309g/cm3
沸点:
556.8ºC at 760mmHg
闪点:
200.7ºC
折射率:
1.593
蒸汽压:
5.27E-13mmHg at 25°C

安全信息

密度:
1.309g/cm3
沸点:
556.8ºC at 760mmHg
闪点:
200.7ºC
折射率:
1.593
蒸汽压:
5.27E-13mmHg at 25°C

海关数据

中国海关编码:2914509090

概述:
2914509090 含其他含氧基的酮. 增值税率:17.0% 退税率:9.0% 监管条件:无 最惠国关税:5.5% 普通关税:30.0%
申报要素:
品名, 成分含量, 用途, 丙酮报明包装
摘要/Summary:
HS:2914509090 other ketones with other oxygen function VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0%

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