Crystalline cephem carboxylic acid addition salt
US4791196A · kind A · utility
3Cited by
1References
16Claims
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Key dates
| Filing date | Sep 23, 1987 |
| Grant date | Dec 13, 1988 |
| Priority date | — |
| Expiry date | Sep 23, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P31/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A storage stable form of the crystalline sulfate of 7-[2-(2-aminothiazol-4-yl)-(Z)-2-methoxyiminoacetamido]-3-[5-(2-hydroxyeth yl)-4-methylthiazoliomethyl]-3-cephem-4-carboxylate has a specified X-ray diffraction pattern and is prepared by adding aqueous sulfuric acid to an aqueous solution of the compound under controlled conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.