m-dPEG®8-NHS ester, product number QBD-10260, is a medium-length (26 atoms, 29.8 Å), methyl-terminated, discrete-length polyethylene glycol (dPEG®) spacer functionalized with an N-hydroxysuccinimidyl (NHS) ester for reactions with free amines. NHS reacts optimally with free amines at pH 7.0 – 7.5. The hydrolytic rate of the ester to the carboxylic acid increases with increasing pH. Please note that modification of surface amines on biomolecules (e.g., proteins and peptides) with this uncharged, methyl-capped dPEG® spacer may alter the overall charge of the resulting conjugates.nMany applications employ this m-dPEG®8-NHS ester. Published papers using this product include:nimaging applications;ndesign of a delivery mechanism for an anti-HIV therapeutic peptide;ncoating of carbon nanotubes, gold nanoshells, and silica shelled quantum dots;nPK improvement of organophosphorus hydrolase in a therapeutic application;npeptide synthesis; and,ndevelopment of antibacterial, cytotoxic dendrimers.nm-dPEG®8-NHS ester, product number QBD-10260, is just one member of an comprehensive line of methyl-terminated dPEG® products. This line includes dPEG® spacers containing 2 to 49 ethylene glycol units.
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Click Chemistry Tools(CCT)公司位于美国亚利桑那州斯科茨代尔(Scottsdale,AZ)。自公司成立以来,一致致力于不断开发和扩展一系列连接产品。他们利用特别新的研究成果研发生产出新颖的交联和标记试剂。产品被广泛用于药物研发、癌症治疗以及各类诊断技术等。此外,CCT还可以提供个性化的定制产品,已满足不同用户的需求。目前CCT的产品线主要包括:Azides(Biotin-Azides)试剂、Bis-sulfone交联试剂、DBCO试剂、TCO试剂、Terminal Alkyne试剂、Tetrazine试剂、标记试剂盒以及分选用底物等。nFluoroprobes公司位于美国亚利桑那州斯科茨代尔(Scottsdale, AZ),自成立以来,一直致力于不断开发一系列的连接(linker)产品。利用特别新的研究成果研发生产出各类新颖的交联和标记试剂。其产品被广泛用于药物研发与筛选、疾病治疗方法和诊断技术等领域。此外,Fluoroprobes还可以根据客户的个性化需求提供各类定制连接产品。代表产品有Classic Fluorescent Dyes, AZDye, Cyanine Dyes, IR Dyes, MB dyes以及一些标记试剂盒等。nQuanta Biodesign公司位于美国中部的俄亥俄州,成立于1997年。也是专注于生产研发各类标记产品的品牌之一。其研发的产品与dPEG技术相结合,生产出他们独有的专利产品dPEG Building Blocks and Linkers,被广泛用于细胞治疗和分子诊断等研究领域。另外,还可为广大科研工作者提供多种化学修饰试剂以及传统Liner等。n目前上述三个品牌都已被被Vectorlabs收购并整合到Vectorlabs产品中