Tocopherol derivatives useful in the synthesis of vitamin E and their preparation
US4636570A · kind A · utility
1Cited by
1References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1985 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Sep 19, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P3/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Tocopherol derivatives of the formula: ##STR1## in which X and X.sub.1, which may be identical or different, each represent hydrogen or chlorine and their acetates are useful in the synthesis of vitamin E.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.