英语词典化工词典

4H-1-Benzopyran-4-one,2,3-dihydro-5,7-dihydroxy-2-(4-hydroxyphenyl)-6,8-dimethyl-, (2S)-

4H-1-Benzopyran-4-one,2,3-dihydro-5,7-dihydroxy-2-(4-hydroxyphenyl)-6,8-dimethyl-, (2S)-


  • 中文别名:杜鹃素; 5,7-二羟基-2-(4-羟基苯基)-6,8-二甲基-2,3-二氢苯并吡喃-4-酮
  • 中文释义:杜鹃素;5,7-二羟基-2-(4-羟基苯基)-6,8-二甲基-2,3-二氢苯并吡喃-4-酮
  • 英文别名:5,7-dihydroxy-2-(4-hydroxyphenyl)-6,8-dimethyl-2,3-dihydrochromen-4-one;
    matteucinol;
    6,8-dimethyl-5,7,4'-trihydroxyflavanone;
    farresol;
    Farrerol;
    5,7-Dihydroxy-2-(4-hydroxyphenyl)-6,8-dimethylchroman-4-one 
  • CAS No.:24211-30-1
  • 分子式:C17H16O5
  • 分子量:300.31
  • 精确分子量:300.10000
  • PSA:86.99000
  • InChI:InChI=1/C17H16O5/c1-8-15(20)9(2)17-14(16(8)21)12(19)7-13(22-17)10-3-5-11(18)6-4-10/h3-6,13,18,20-21H,7H2,1-2H3/t13-/m0/s1
  • 分子结构式:

物化性质

密度:
1.391g/cm3
沸点:
583ºC at 760mmHg
闪点:
219.7ºC
折射率:
1.662
蒸汽压:
3.44E-14mmHg at 25°C

安全信息

密度:
1.391g/cm3
沸点:
583ºC at 760mmHg
闪点:
219.7ºC
折射率:
1.662
蒸汽压:
3.44E-14mmHg at 25°C

海关数据

中国海关编码:2932999099

概述:
2932999099. 其他仅含氧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%
申报要素:
品名, 成分含量, 用途
摘要/Summary:
2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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