Formoterol tartrate process and polymorph
US6472563B1 · kind B1 · utility
52Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2001 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Nov 9, 2021 |
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.