Abstract: The invention provides a new crystalline form of agomelatine, preparation and use thereof. The X-ray powder diffraction diagram of the agomelatine crystalline form shows main peaks at the diffraction angles 2? 11.13°, 11.82°, 17.49°, 18.29°, 19.48°, 19.72°, 20.50°, 21.76°, 22.54°, 22.97°, 24.56°, 25.36°, 27.16° and 31.93°. Said new crystalline form is characterized by high purity, stability and good reproducibility, and thus is advantageous for the pharmaceutical formulation. In addition, the stability and solubility of said crystalline form are also superior over the several existing crystalline forms.

Abstract: The present invention relates to a complex of agomelatine and to preparation thereof. The hydrogen halide complex of agomelatine obtained through the present method is more soluble, more stable, and of higher purity than agomelatine itself, making it more suitable to be used in pharmaceutical preparation. Using this method, product of high purity can be obtained through a simple process, without having to incur further complicated steps.

Abstract: Disclosed are dihydroindolone compounds which can modulate the activity of protein tyrosine kinases, a method for preparing the same, and pharmaceutical compositions comprising the same. Also disclosed are use of such compounds and pharmaceutical compositions thereof in the treatment and/or prophylaxis of protein tyrosine kinase associated diseases in an organism, particularly in the treatment and/or prophylaxis of tumors and fibroblast proliferation associated diseases.