（备注：非常规分子量：400、600。精确聚合度的小分子定制。）

结构式：

基本信息：

中文名称：Dibenzocyclooctyne-聚乙二醇-巯基 (DBCO-PEG-SH)

别名：DBCO-PEG-Thiol

英文名称：DBCO-PEG-Thiol，DBCO-PEG-SH

CAS：-

分子量：400、600、1K、2K、3.4K、4K、5K、10K

纯度：95%以上

应用简介：

DBCO(dibenzocycolctyne) PEG thiol (DBCO-PEG-SH) derivatives can go Click Chemistryreaction without a need of any metal catalysts. The strain-promoted 1,3-dipolarcycloaddition of cyclooctynes and azides, also termed as the Cu-free clickreaction, is a bioorthogonal reaction that enables the conjugation of twomolecules in aqueous solution. DBCO PEG derivatives possess fast kinetics andstability in aqueous buffer. DBCO reagents can be used to label azide-modifiedbiomolecules spontaneous without the need for toxic Cu catalysts. PEGylationcan increase solubility and stability and reduce immunogenicity of peptides andproteins. It can also suppress the non-specific binding of charged molecules tothe modified surfaces.

Copper-freeClick Reaction Procedures:

Preparethe azide-containing reagents in reaction buffer.

AddDBCO reagents to azide containing reagents. Add 1 mol equivalent of limitingreagent to 1.5~3.0 mol equivalents of abundance reagent.

Incubatethe reaction at room temperature for 2~4 hours or 2~12 hours at 4℃.

Purifyconjugates either by dialysis or size-exclusion chromatograph.

物理性质：

状态：淡黄色到白色固体，或者半固体，取决于分子量。

溶解性：溶于水，二氯甲烷，DMSO,DMF等溶剂。

保持条件：-20℃长期保存，避光，干燥。

注意事项：取用一定要干燥，避免频繁的溶解和冻干。

反应性：DBCO于含有N3基团的反应。

技术指标：

纯度（PEG）：95%以上

取代率（DBCO）：90%以上

取代率（SH）：90%以上

分散系数（PDI）：小于等于1.05

分析：COA、GPC、NMR、MALDI-TOF