BBO-8520 is a first-in-class, direct dual inhibitor of both the active (ON) and inactive (OFF) conformational states of KRASG12C. BBO-8520 binds to the Switch-II/Helix3 pocket of KRASG12C, covalently modifying the target cysteine residue and thereby disabling effector binding in the ON state. BBO-8520 exhibits potent inhibition of KRAS signaling under growth factor-activated conditions, where existing OFF-only inhibitors demonstrate minimal activity. In vivo, BBO-8520 rapidly engages its target and suppresses signaling, resulting in durable tumor regression across multiple models, including those resistant to OFF-only KRASG12C inhibitors.
Molecular Weight:
729.74
Purity:
97.87%
CAS Number:
[2893809-51-1]
Formula:
C35H33F6N7O2S
Target:
Kras|||Ras
T85809
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