Synthesis of biotin
US3979396A · kind A · utility
3Cited by
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7Claims
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Key dates
| Filing date | Dec 3, 1973 |
| Grant date | Sep 7, 1976 |
| Priority date | — |
| Expiry date | Dec 3, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D333/36
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Synthesis of biotin from 4-carbomethoxy-2-(4,5-dihydrothiophen-3(2H)-one)-valeric acid methyl ester, and dihydrothiophene intermediates in this synthesis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.