XYD129 is an effective CBP/p300 PROTAC degrader. XYD129 has antiproliferative activity on MV4-11 cell line (IC 50=0.044 µM). XYD129 can be used for the study of acute myeloid leukemia (AML). (Structure Note: Pink, CBP/p300 ligand 5 (HY-161711), Blue, E3 ligase ligand (HY-41547), Black, Linker (HY-40178))[1].