4,5-二甲基噻吩-2-羰酸

4,5-二甲基噻吩-2-羰酸

4,5-Dimethylthiophene-2-carboxylic acid

40808-24-0

C7H8O2S

156.20200

65.54000

2.06310

156.02500

白色至淡黄色晶体粉末

129.5ºC

206-211°C

1.259 g/cm3

290.6ºC at 760 mmHg

2934999090

R36

S26

Xi

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: