PROTAC MEK1 Degrader-1 is a PROTAC targeting MEK1 with a pIC50 value of 7.0. PROTAC MEK1 Degrader-1 consists of a MEK1 inhibitor and a von Hippel-Lindau ligand. PROTAC MEK1 Degrader-1 can inhibit ERK1/2 phosphorylation. PROTAC MEK1 Degrader-1 shows an antiproliferative activity against A375 cells[1].