MW 395.5 Da, Purity >99%. Potent, selective and competitive ATM kinase inhibitor. IC₅₀ values are 12.9 (ATM), 2000 (DNA-PK), 9300 (mTOR), 16600 (PI3K), >100000 (ATR) and >100000 nM (PI4K). Sensitizes cells to ionizing radiation and chemotherapeutics. Blocks Akt phosphorylation, induces G1 cell cycle arrest and induces apoptosis in breast and prostate cell lines.
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