Crystal form of a potassium-competitive acid blocker and preparation method thereof
US10538506B2 · kind B2 · utility
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5Claims
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Key dates
| Filing date | Nov 9, 2015 |
| Grant date | Jan 21, 2020 |
| Priority date | — |
| Expiry date | Nov 9, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/13
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to a crystal form of a potassium-competitive acid blocker, that is, 1-[5-(2-fluorophenyl)-1-(pyridine-3-sulfonyl)-1H-pyrrole-3-yl]-N-methyl methylamine fumaric acid salt (which is briefly referred to as a formula I) and a preparation method thereof. An X-ray powder diffraction characteristic peak thereof is shown in FIG. 1. The crystal form that is represented by formula I, provided in the present invention, is stable, reproducible, and is suitable for drug development.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.