MRTX849ethoxypropanoicacid is a compound that contains a ligand for KRAS G12C and a PROTAC linker. It is commonly employed in the synthesis of PROTAC LC-2, which is a highly effective and innovative PROTAC. LC-2 has been proven to degrade endogenous KRAS G12C with remarkable potency, exhibiting DC50 values ranging from 0.25 to 0.76 μM.