BBO-8520

FC1=[C@] (C (C (F) (F) F) =CC2=C (N=C (N=C21) OC[C@@]34CCCN3C[C@@H] (C4) F) N5[C@H] (CN ([C@@H] (C5) C) C (C=C) =O) C) [C@]6=CC=C (F) C7=C6C (C#N) =C (N) S7

BBO-8520 is a covalent small molecule inhibitor that selectively targets KRAS G12C with high oral bioavailability. It functions as both a KRAS G12C (OFF) inhibitor and a blocker of KRAS G12C (ON) signaling. The compound inhibits cellular proliferation by binding to GTP-bound KRAS G12C (ON), thereby preventing RAS-RAF1 interaction and promoting the transition to the inactive (OFF) state .