1,3,3-三甲基吲哚-β-萘基二氢呋喃

1,3,3-三甲基吲哚-β-萘基二氢呋喃

1',3',3'-trimethylspiro[benzo[f]chromene-3,2'-indole]

1592-43-4

C23H21NO

327.41900

12.47000

5.43430

327.16200

1.699

142.8ºC

7.49E-10mmHg at 25°C

174ºC

1.22g/cm3

492.7ºC at 760 mmHg

2934999090

品名, 成分含量, 用途

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%

2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

2934999090. Other nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds. General tariff: