Crystalline (7R)-7-amino-3-(1'-pyridiniummethyl)-3-cephem-4-carboxylate monohydrate compound
US4692518A · kind A · utility
1Cited by
5References
1Claims
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Key dates
| Filing date | Nov 6, 1985 |
| Grant date | Sep 8, 1987 |
| Priority date | — |
| Expiry date | Nov 6, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K31/545
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Crystalline (7R)-7-amino-3-(1'-pyridiniummethyl)-3-cephem-4-carboxylate monohydrate compound is an intermediate in the synthesis of the cephalosporin antibiotic ceftazidime.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.