Crystal form of aromatic heterocyclic compound, composition thereof, production method thereof and uses thereof

Abstract

A crystal form includes: crystal form I and crystal form III, using X-ray diffraction method to have characteristic diffraction peaks at about 8.4°, 10.0°, 13.6°, 16.4°, and 19.7°, respectively; and at about 8.2°, 9.8°, 17.2°, and 26.8°. A production method of the crystal form I and III includes: aromatic heterocyclic compound is added with a suitable solvent for stirring, filtering, and drying to obtain crystal form I or III; and the use of crystal form I or crystal form III is for the production of drugs for preventing or treating diseases caused by abnormal JAK-STAT signaling pathways.

Dependencies are inferred from the claim text.