(S,R,S)-AHPC-PEG3-NH2 hydrochloride (Standard) is the analytical standard of (S,R,S)-AHPC-PEG3-NH2 hydrochloride (HY-103602). This product is intended for research and analytical applications. (S,R,S)-AHPC-PEG3-NH2 (VH032-PEG3-NH2) hydrochloride is a synthesized E3 ligase ligand-linker conjugate that incorporates the (S,R,S)-AHPC based VHL ligand and 3-unit PEG linker used in PROTAC technology.