Methods for the manufacture of amorphous cefuroxime axetil
US5847118A · kind A · utility
6Cited by
3References
6Claims
0Family size
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Key dates
| Filing date | Jul 25, 1997 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Jul 25, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D501/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing pure amorphous cefuroxime axetil comprising the steps of dissolving crystalline cefuroxime axetil in a highly polar organic solvent and adding the resulting solution to water, or alternatively, dissolving crystalline cefuroxime axetil in a highly polar solvent and adding small quantities of water to the organic solution and adding the resulting organic-aqueous solution to water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.