A-1155463

A-1155463 is a highly potent and selective BCL-XL inhibitor, A-1155463 shows picomolar binding affinity to BCL-XL (Ki ＜0.01 nM), and >1000-fold weaker binding to BCL-2 (Ki = 80 nM) and related proteins BCL-W (Ki = 19 nM) and MCL-1 (Ki > 440 nM).