Amino-dPEG?36–t-butyl ester, product number QBD-10901, is a long (111 atoms, 132.7 ?), heterobifunctional, monodisperse polyethylene glycol (PEG) linker containing a single molecular weight, discrete length PEG (dPEG?) chain. One end of the dPEG? chain terminates with a carbonyl-reactive primary amine. The opposite end terminates with an amine-reactive, tert-butyl-ester-protected propionic acid. The t-butyl ester protecting group cleaves easily with trifluoroacetic acid (TFA), exposing a propionic acid moiety that forms amide bonds with primary amines upon activation. This compound is useful for supramolecular construction and building novel crosslinkers. Conjugates modified with QBD-10901 have improved water solubility and greater hydrodynamic volume.nThe amine end of the molecule reacts with activated carboxylic acid esters (for example, N-hydroxysuccinimidyl or tetrafluorophenyl esters) to form an amide bond. Also, carboxylic acids can couple to the amine end of Amino-dPEG?36-t-butyl ester using a carbodiimide such as EDC, with or without an acylating agent such as N-hydroxysuccinimide (NHS). After working up the reaction to remove unreacted components and isolate the intermediate, trifluoroacetic acid is used to remove the tert-butyl ester and expose the propionic acid end group. The exposed carboxylic acid can then react further. For example, activation as the NHS or TFP ester is possible. Also, the acid can be coupled directly to an amine as described above.
產(chǎn)品形式
白色至類白色固體
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其他
Click Chemistry Tools(CCT)公司位于美國亞利桑那州斯科茨代爾(Scottsdale,AZ)。自公司成立以來,一致致力于不斷開發(fā)和擴展一系列連接產(chǎn)品。他們利用特別新的研究成果研發(fā)生產(chǎn)出新穎的交聯(lián)和標(biāo)記試劑。產(chǎn)品被廣泛用于藥物研發(fā)、癌癥治療以及各類診斷技術(shù)等。此外,CCT還可以提供個性化的定制產(chǎn)品,已滿足不同用戶的需求。目前CCT的產(chǎn)品線主要包括:Azides(Biotin-Azides)試劑、Bis-sulfone交聯(lián)試劑、DBCO試劑、TCO試劑、Terminal Alkyne試劑、Tetrazine試劑、標(biāo)記試劑盒以及分選用底物等。nFluoroprobes公司位于美國亞利桑那州斯科茨代爾(Scottsdale, AZ),自成立以來,一直致力于不斷開發(fā)一系列的連接(linker)產(chǎn)品。利用特別新的研究成果研發(fā)生產(chǎn)出各類新穎的交聯(lián)和標(biāo)記試劑。其產(chǎn)品被廣泛用于藥物研發(fā)與篩選、疾病治療方法和診斷技術(shù)等領(lǐng)域。此外,F(xiàn)luoroprobes還可以根據(jù)客戶的個性化需求提供各類定制連接產(chǎn)品。代表產(chǎn)品有Classic Fluorescent Dyes, AZDye, Cyanine Dyes, IR Dyes, MB dyes以及一些標(biāo)記試劑盒等。nQuanta Biodesign公司位于美國中部的俄亥俄州,成立于1997年。也是專注于生產(chǎn)研發(fā)各類標(biāo)記產(chǎn)品的品牌之一。其研發(fā)的產(chǎn)品與dPEG技術(shù)相結(jié)合,生產(chǎn)出他們獨有的專利產(chǎn)品dPEG Building Blocks and Linkers,被廣泛用于細胞治療和分子診斷等研究領(lǐng)域。另外,還可為廣大科研工作者提供多種化學(xué)修飾試劑以及傳統(tǒng)Liner等。n目前上述三個品牌都已被被Vectorlabs收購并整合到Vectorlabs產(chǎn)品中