Preparation of retinyl esters
US7566795B2 · kind B2 · utility
2Cited by
2References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2006 |
| Grant date | Jul 28, 2009 |
| Priority date | — |
| Expiry date | Oct 6, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12P23/00
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Long-chain esters of retinol are prepared via a chemoenzymatic process from short-chain retinyl esters and an appropriate long-chain acid or ester in the presence of an enzyme. Use of various additives enhance the yield of the desired ester and facilitated its purification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.