The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 1995
Filed:
Jun. 16, 1993
Applicant:
Inventors:
Frederick Khachik, Beltsville, MD (US);
Gary R Beecher, Laurel, MD (US);
Betty W Li, Mitchellville, MD (US);
Assignees:
The Catholic University of America, Washington, DC (US);
The United States of America as represented by the Secretary of, , US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
568494 ; 568449 ; 568484 ; 568495 ;
Abstract
(all-E)-2,7,-dimethylocta-2,4,6-triene-1,8-dial-.sup.13 C.sub.4 is synthesized from commercially available and relatively inexpensive starting compounds, and the key starting compound is triethyl phosphonoacetate-.sup.13 C.sub.2. The .sup.13 C labeled dial is useful as an intermediate in synthesizing .sup.13 C labeled carotenoids.