Crystal form of 3-(6-(1-(2,2-difluorobenzo[d][1,3]dioxole-5-yl)cyclopropane formamido)-3-methylpyridine-2-yl)benzoic acid and preparation method thereof
US10308641B2 · kind B2 · utility
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Key dates
| Filing date | Aug 11, 2016 |
| Grant date | Jun 4, 2019 |
| Priority date | — |
| Expiry date | Aug 11, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/13
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present disclosure provides crystalline form A of 3-(6-(1-(2, 2-difluorobenzo [d] [1, 3] dioxo-5-yl) cyclopropanecarboxamido)-3-methylpyridin-2-yl) benzoic acid and process of preparation thereof. The crystalline form A has low hygroscopicity, good stability, is convenient to store. It has higher solubility than that of prior art and therefore plays an important role in further optimization and development of the drug.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.