BCN-carbamate-PEG2-Bromide 是一种异双功能 PEG 连接剂,含有双环[6.1.0]壬炔(BCN)基团、氨基甲酸酯连接基、短链 PEG 间隔臂和末端溴基。具有环张力的 BCN 炔基可与叠氮基通过无需铜催化的应变促进叠氮-炔环加成(SPAAC)反应进行偶联;末端溴基可发生亲核取代反应,为进一步偶联提供另一反应位点。PEG 间隔臂可增加亲水性,并在两个功能端基之间提供一定间隔。该连接剂可用于点击化学和生物偶联中的生物分子及相关分子构建体功能化。
BCN-carbamate-PEG2-Bromide is a heterobifunctional PEG linker containing a bicyclo[6.1.0]nonyne (BCN) group, a carbamate linkage, a short PEG spacer, and a terminal bromide. The strained BCN alkyne reacts with azides through copper-free strain-promoted azide–alkyne cycloaddition (SPAAC), while the terminal bromide can undergo nucleophilic substitution, providing an additional functional handle for further conjugation. The PEG spacer contributes hydrophilicity and separates the two functional termini. This linker can be used in click chemistry and bioconjugation for the functionalization of biomolecules and related molecular constructs.