8,9-dihydroxy-2-methyl-5H-pyrano[3,2-c]chromen-4-one
- 中文别名:8,9-dihydroxy-2-methyl-5H-pyrano[3,2-c]chromen-4-one
- 中文释义:8,9-dihydroxy-2-methyl-5H-pyrano[3,2-c]chromen-4-one
- 英文别名:8,9-dihydroxy-2-methyl-5H-pyrano[3,2-c]chromen-4-one;
Citromycin;
8,9-Dihydroxy-2-methyl-5H-pyrano[3,2-c]chromen-4-on;
4H,5H-Pyrano(3,2-c)(1)benzopyran-4-one,8,9-dihydroxy-2-methyl
- CAS No.:37209-30-6
- 分子式:C13H10O5
- 分子量:246.21500
- 精确分子量:246.05300
- PSA:79.90000
- InChI:The Key: QZZUHPUWIRSQPB-UHFFFAOYSA-N
- 分子结构式:
物化性质
- 密度:
- 1.56g/cm3
- 沸点:
- 591.1ºC at 760 mmHg
- 闪点:
- 236.7ºC
- 折射率:
- 1.703
安全信息
- 密度:
- 1.56g/cm3
- 沸点:
- 591.1ºC at 760 mmHg
- 闪点:
- 236.7ºC
- 折射率:
- 1.703
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%