性高湖久久久久久久久_国产成人精品视频_欧美成人激情视频_亚洲三级网站_久久午夜综合久久_亚洲国产精品久久

歡迎進入上海起發實驗試劑有限公司!
產品展示
首頁 > 產品展示 > 代理品牌 > 國際品牌 > Quanta BioDesign代理產品介紹

Quanta BioDesign代理產品介紹

描述:Quanta BioDesign是美國著名的dPEG系列產品提供商

更新時間:2017-01-21
訪問次數:1994
廠商性質:代理商
詳情介紹

The term "dPEG®" is Quanta BioDesigns trademarked acronym for "discrete poly(ethylene glycol)" or "discrete PEG". Each of our products represents a single compound with a unique, specific, single molecular weight (MW) PEG synthesized de novo from pure, small units (e.g., triethylene glycol or tetraethylene glycol). In our numbering system, we name compounds as dPEG®nn, where nn stands for the number of oxygen atoms in the spacer unit. We do this in order to simplify the naming of the compounds. Our catalog has the exact structure of the single compound. Thus, for example, product number 10244, amino-dPEG®4-acid, has an amino group on one end, four (4) ethylene oxide units, and a carboxylic acid group on the other end, as shown beside:

Some people prefer the term "monodisperse" to describe these PEG compounds. While not an inappropriate term, "monodisperse" implies either that

  1. the compounds are single compounds purified from a polymeric mixture, or
  2. there is only one compound formed from a polymeric process, which is purely a theoretical concept. We prefer the term "discrete", since these compounds are synthesized as single MW compounds from pure starting materials via standard organic methodology. A discrete PEG is a single compound having no other PEG homologues in it.

產品相關關鍵字: Quanta BioDesign QuantaBioDesign QuantaBioDesign代理

留言框

  • 產品:

  • 您的單位:

  • 您的姓名:

  • 聯系電話:

  • 常用郵箱:

  • 省份:

  • 詳細地址:

  • 補充說明:

  • 驗證碼:

    請輸入計算結果(填寫阿拉伯數字),如:三加四=7
主站蜘蛛池模板: 亚洲精品99| 国产一级视频在线观看 | 毛片在线视频 | 国产精品永久免费观看 | 成人免费一区二区 | 国产精品视屏 | 亚洲国产成人在线视频 | 一区二区三区高清 | 羞羞视频在线观看免费观看 | 国产精品夜色一区二区三区 | 国产精品成人在线观看 | 91操操操 | 户外露出一区二区三区 | 欧美成人自拍视频 | 欧美一级片黄色 | 精品国产乱码久久久久久蜜退臀 | 成人av资源在线 | 久久伊人精品 | 成人精品在线视频 | 亚洲欧美日韩一区二区 | 国产日韩精品在线 | 一区二区三区视频在线观看 | 午夜一级做a爰片久久毛片 精品综合 | 精国产品一区二区三区四季综 | 国产精品久久久久久久岛一牛影视 | 永久看片 | 欧美成人精品一区 | 国产又爽又黄的视频 | av黄色在线 | 久草热8精品视频在线观看 午夜伦4480yy私人影院 | 亚洲成人一级片 | 欧美午夜视频 | 国产ts人妖一区二区三区 | 综合二区| 浮生影院免费观看中文版 | 久久国内精品 | 国产成人精品一区二区三区 | 中文字幕一区二区三区日韩精品 | 91精品在线播放 | 亚洲精品在线国产 | 成人精品视频在线 |