Crystal polymorph of 8-bromo-2-(1-methylpiperidin-4-ylamino)-4-(4-phenoxyphenylamino)pyrido[4,3-d]pyrimidin-5(6H)-one hydrochloride and method for preparing same
US11731969B2 · kind B2 · utility
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Key dates
| Filing date | Aug 12, 2019 |
| Grant date | Aug 22, 2023 |
| Priority date | — |
| Expiry date | Apr 11, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/13
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An embodiment relates to a crystal polymorph of 8-bromo-2-(1-methylpiperidin-4-ylamino)-4-(4-phenoxyphenylamino)pyrido [4,3-d]pyrimidin-5(6H)-one hydrochloride which can effectively suppress FLT3 and has excellent stability even in a high temperature and humid environment, and a method for preparing same.
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