Synthesis of biotin
US4029647A · kind A · utility
3Cited by
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2Claims
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Key dates
| Filing date | May 12, 1976 |
| Grant date | Jun 14, 1977 |
| Priority date | — |
| Expiry date | May 12, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D333/38
- 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 thiophene intermediates in this synthesis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.