Polymorphs of an active pharmaceutical ingredient
US8946441B2 · kind B2 · utility
0Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2011 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | Jun 24, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P19/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to crystalline form I of Febuxostat as well as to pharmaceutical compositions comprising crystalline form I as an active pharmaceutical ingredient. Furthermore the present invention relates to a further polymorphic form of Febuxostat designated as form II and to a novel solvate of Febuxostat. The present invention also relates to methods of making crystalline form I, form II and the novel solvate of Febuxostat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.