国产一区二区精品三级馆 ,久久亚洲精品色一区,麻豆精品国产第一区二区,国产精品久久久久免费a∨,亚洲愉拍一区二区三区,亚洲精品一区二区三浪潮,久久久久欧美精品观看蜜桃,国模精品视频一区二区三区

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%