Formoterol tartrate polymorph
US6720453B2 · kind B2 · utility
22Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2002 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Sep 10, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/13
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.