一种 PROTAC linker,属于 PEG 类。可用于合成 PROTAC 分子。
Fluorescein-PEG6- NHS ester is a fluorescein labeled PEG derivative containing a NHS group, which enables labeling for antibodies and other purified proteins at primary amines (lysine side chains). The hydrophilic PEG spacer arm increases solubility in aqueous media.