• Reactant for synthesis of 3-[4-(amino/methylsulfonyl)phenyl]methylene-indolin-2-one derivatives as novel COX-1/2 and 5-LOX inhibitors1 • Reactant for preparation of Aurora kinase inhibitors2 • Reactant for synthesis of 3-substituted 2-indolinone RET inhibitors3 • Reactant for synthesis of 4-azachromeno[2,3-b]indol-11(6H)-ones and derivatives as analogs of ellipticine4 • Reactant for preparation of [18F]fluorobenzylidene-indolinone as possible tyrosine kinase inhibitor for PET tumor imaging5 • Reactant for preparation of 3-substituted indolin-2-ones as neuroprotective and toxic agents6