Back to results
US 2023/0141887 A1Published application
Crystal form of diazaspiropyran compound
AssigneeMedshine Discovery Inc.
InventorsXiangyu FU, Charles Z. DING, Lihong HU, Xu ZENG, Ting YAO
Life of this patent
Estimating the term…
Abstract
Disclosed are a salt type and a crystal form (I) of a diazaspiropyran compound, and a preparation method therefor. Also disclosed is the use of the salt type and the crystal form in the preparation of drugs for treating related diseases.
Claims28
A crystal form A of the compound of formula (I),
- which is characterized by X-ray powder diffraction pattern with characteristic diffraction peaks at 2θ angles of 15.48±0.20°, 19.32±0.20°, and 20.17±0.20°.
(canceled)
(canceled)
(canceled)
A crystal form B of the compound of formula (I),
- which is characterized by X-ray powder diffraction pattern with characteristic diffraction peaks at 2θ angles of 14.11±0.20°, 19.29±0.20°, and 21.22±0.20°.
(canceled)
(canceled)
(canceled)
A crystal form C of the compound of formula (I),
- which is characterized by X-ray powder diffraction pattern with characteristic diffraction peaks at 2θ angles of 8.26±0.20°, 19.30±0.20°, and 20.53±0.20°.
(canceled)
(canceled)
24-48. (canceled)
(canceled)
Dependencies are inferred from the claim text.