Process for producing crystalline atorvastatin calcium
US6730797B2 · kind B2 · utility
1Cited by
28References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2003 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Aug 8, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D207/34
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A factory scale process for producing crystalline atorvastatin calcium includes the step of drying the isolated product in a vacuum pan dryer. The vacuum pan dryer has an agitator which is continuously rotated at a speed of approximately 1 rpm. High quality material is routinely and consistently produced with reduced cycle time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.