爱啪导航,人妻偷拍一区二区三区,国产在线码观看超清无码视频 ,福利色导航,国产爆乳成AV人在线播放,dvdporin161718,中文字幕精品亚洲二区,在线天堂av在线在线

      Welcome to visit Changzhou Chengbang Chemical Co., Ltd. official website!

      CollectionHomepage中文版

      More>>
      tert-Butylamine
      Product name: tert-Butylamine
      CAS NO: 75-64-9
      Molecular weight: 73.14 
      EC NO: 200-888-1
      Molecular formula: C4H11N
      InChI: InChI=1/C4H11N/c1-4(2,3)5/h5H2,1-3H3/p+1
      Structural formula:
        Order                   Back