Chk1-IN-5 is a highly effective inhibitor of checkpoint kinase 1 (Chk1), which hinders the phosphorylation of Chk1 and effectively suppresses tumor growth in a colon cancer xenograft model[1].
Compound PROTAC-2, also known as PROTAC Chk1 degrader-1, is a potent degrader of Chk1, exhibiting a DC50 of 1.33 μM. It is utilized in cancer research [1].