Crystals of thiadiazole derivative DPP-IV inhibitors and uses thereof
US10450328B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Nov 24, 2016 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Nov 24, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/13
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention belongs to the field of drug crystals, relates to crystals of thiadiazole derivative DPP-IV inhibitors, and in particular relates to A and B type crystals of the compound as shown in formula 7. The crystals of the present invention have excellent stability. For example, under high temperature, high humidity or light test conditions, the material contents associated with the crystal of the compound of formula 7 do not change significantly. In addition, the crystal of the present invention also has a very good powder flowability and satisfies the requirements of drug preparation and production.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.