(S,R,S)-AHPC-PEG1-N3 (Standard) is the analytical standard of (S,R,S)-AHPC-PEG1-N3 (HY-103600). This product is intended for research and analytical applications. (S,R,S)-AHPC-PEG1-N3 (VH032-PEG1-N3) is a synthesized E3 ligase ligand-linker conjugate that incorporates the (S,R,S)-AHPC based VHL ligand and 1-unit PEG linker used in PROTAC technology. (S,R,S)-AHPC-PEG1-N3 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.