Forms of dexlansoprazole and processes for the preparation thereof
US9034904B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2010 |
| Grant date | May 19, 2015 |
| Priority date | — |
| Expiry date | Jun 7, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D235/28
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Provided is dexlansoprazole propylene glycolate hydrate. Polymorphic forms thereof are also provided. The dexlansoprazole propylene glycolate hydrate maybe such that the propylene glycol component is present in approximately equal proportions of (R) absolute configuration and (S) absolute configuration, or present in predominantly (R) absolute configuration, or predominantly (S) absolute configuration. Salts of dexlansoprazole are also provided. In particular, crystalline dexlansoprazole isopropylammonium salt and crystalline MTBE solvate of dexlansoprazole t-butylammonium salt are provided. Pharmaceutical formulations comprising dexlansoprazole propylene glycolate hydrate are also provided. Furthermore, processes for preparation of dexlansoprazole propylene glycolate hydrate are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.