Azido-PEG3-acid 是一种 PROTAC linker，属于 PEG 类。Mal-PEG1-acid 可用于合成 PROTAC 分子。比如 合成CPT-APO (CPT: Camptothecin ) 偶联物。Azido-PEG3-acid 是一种不可降解 (non-cleavable) 的含 5 个单元 PEG 的 ADC linker，可用于合成抗体偶联活性分子 (ADC)。Azido-PEG5-acid 是一种点击化学试剂。它含有 Azide 基团，可以和含有 Alkyne 基团的分子发生铜催化的叠氮-炔环加成反应（CuAAc)。它还可以和含有 DBCO 或 BCN 基团的分子发生环张力驱动的炔-叠氮环加成反应 (SPAAC)。 Azido-PEG5-acid is a PEG derivative containing an azide group with a terminal carboxylic acid. The hydrophilic PEG spacer increases solubility in aqueous media. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. Product description Azido-PEG5-acid is a PEG-based PROTAC linker can be used in the synthesis of PROTACs, such as the conjugate CPT-APO (CPT: Camptothecin ). Azido-PEG5-acid is a non-cleavable 5 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs). Azido-PEG5-acid is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.