NR-11c is a selective and potent p38α PROTAC degrader. NR-11c effectively degrades p38α in a variety of tumor cells. When administered intraperitoneally or intravenously to mice, NR-11c primarily acts in the liver. NR-11c can be used in cancer research. (Pink: p38α inhibitor 5 ; Black: linker (HY-159800) ; Blue: VHL E3 ligase ligand (HY-112078) ).