2X7O:
reference: Design, Synthesis, and Evaluation of Indolinones as Inhibitors of the Transforming Growth Factor beta Receptor I (TGFbetaRI)., Roth GJ, Heckel A, Brandl T, Grauert M, Hoerer S, Kley JT, Schnapp G, Baum P, Mennerich D, Schnapp A, Park JE, J Med Chem. 2010 Oct 4. PMID: 20919678

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