Crystalline forms of grapiprant
US9265756B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2015 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Mar 5, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D471/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present disclosure provides a crystalline form of grapiprant selected from the group consisting of Form X, Form X2, Form X3, Form F, Form K, Form L, Form M, and Form N. Also provided is a pharmaceutical composition, the composition comprising at least one crystalline form of grapiprant, and at least one pharmaceutically acceptable excipient, wherein the crystalline form of grapiprant is selected from the group consisting of Form X, Form X2, Form X3, Form F, Form K, Form L, Form M, and Form N. Other aspects of the disclosure provide a process for preparing a substantially pure crystalline Form A of grapiprant. The process comprises contacting grapiprant at ambient temperature with a solvent comprising dichloromethane and acetone to form a saturated or a near saturated solution. Crystals of the substantially pure crystalline Form A of grapiprant are formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.