3,4-乙撑基二氧甲醛噻吩

3,4-乙撑基二氧甲醛噻吩

2,3-DIHYDROTHIENO[3,4-B][1,4]DIOXINE-5-CARBALDEHYDE

204905-77-1

C7H6O3S

170.18600

63.77000

1.33180

170.00400

1.623

142ºC

0.000572mmHg at 25°C

138ºC

1.424g/cm3

311.2ºC at 760mmHg

2934999090

R20/21/22

Xn

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: