(S,R,S)-AHPC-CO-CH2-azetidine-piperazine-CH2-COOH

(S,R,S)-AHPC-CO-CH2-azetidine-piperazine-CH2-COOH is a conjugate of E3 ligase ligand and linker, consisting of (S,R,S)-AHPC (HY-125845) and the corresponding Linker. (S,R,S)-AHPC is a VH032-based von Hippel-Lindau (VHL) ligand that recruits VHL proteins. (S,R,S)-AHPC-CO-CH2-azetidine-piperazine-CH2-COOH can be used as a key intermediate for the synthesis of complete PROTAC molecules.