欧美日韩国产精品成人,99免费观看视频,69av久草视频,色男人天堂,精品乱码久久久,97中文字幕在线,av成人天堂

            2,2-Dibromo-3-Nitrilopropiona..
            Diallyl dimethyl ammonium chl..
            1,2-Benzisothiazolin-3-One..
            1-Bromo-3-chloro-5,5-Dimethyl..
            2-Bromo-2-nitro-1,3-propanedi..
            Povidone Iodine..
            Carbohydrazide..
            Diethyl methyl benzene diamin..
            More
        Products

      7 - ACA 7 Aminocephalosporanic acid;

      Product name. 7 Aminocephalosporanic acid;

      7 - ACA 7 Aminocephalosporanic acid;;

      CAS RN); 957-68-6 Molecular formula C10H12N2O5S

      Molecular weight 272.27 Appearance; White crystalline powder.

      Content; 98.0% of 13905318421 li

      7 - ACA is corn starch by fungus fermentation by cephalosporin C, cephalosporin C in the amide bond hydrolysis get a 7 - ACA.

      With the way; Used as pharmaceutical intermediates, is the most commonly used cephalosporins mother nucleus



      Copyright(C)2014,Jinan Wanduoxin Chemical Co.,Ltd.  Supported by ChemNet ChinaChemNet Toocle Copyright Notice Admin