亚洲精品久久久鸭子,午夜福利观看视频1,AV亚洲精品少妇毛片无码,精品免费看一区二区三区A片,乳色吐息在线观看全集免费观看,国产又粗又猛又爽又黄的A片小说,欧美AAAAAA片黑寡妇,亚洲国产精品久久久久秋霞影院,国产一区二区三区A片在表,国产国拍亚洲精品永久软件

Thiophene-2-carboxylic acid

527-72-0

C₅H₄O₂S

128.15

125-127 °C(lit.)

Usage

It is an intermediate of anticancer drug raltitrexed, nonsteroidal anti-inflammatory drug Tenidap, etc.

Quality standard

White to grayish white powder

≥99.0%

≤0.5%