Bis-(N,N'-NHS-PEG4)-Cy5, a PROTAC linker based on alkyl/ether used in the synthesis of PROTACs, is a cyanine labeled PEG analogue with excitation/emission maximum 649/667 nm containing a NHS ester group, which is an amine reactive group. Hydophilic PEG spacer increases solubility in aqueous media. This reagent can be utilized to produce Cyanine-labeled biomolecules for subsequent use such as in vivo research, and drug design related experiments.

纯度：≥98%

CAS：2107273-48-1 (chloride)