(Rac)-PROTAC PARP/EGFR ligand 1 incorporates a ligand for PARP and EGFR , and a PROTAC linker, which recruit E3 ligases (such as VHL, CRBN, MDM2 , and IAP ). (Rac)-PROTAC PARP/EGFR ligand 1 can be used in the synthesis of DP-C-4, which is CRBN-based dual PROTAC for simultaneous degradation of EGFR and PARP.