成人毛片在线视频,91最新网站,91av国产第一线路,欧美激情精品久久久久,欧美组图日韩亚洲中文字幕,人妻少妇中文在线视频,永久综合狠狠狠狠永久丁

『Cas No.』: 80756-85-0; 84994-24-1
『Structural formula』:

Product name: AE active ester

『Cas No.』: 80756-85-0; 84994-24-1

Structural type:

Molecular Formula: C13H10N4O2S3

Molecular weight: 350.4391

Characteristics: light yellow crystalline powder

"Use": It is used to manufacture cephalosporin, ceftriaxone, ceftriaxone, cefetamet pivoxil and other pioneer drugs

Packaging: 25KG/cardboard barrel.