Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Possible biosynthesis of d9-β-elemene, d9-(+)-valencene and d9-α-guaiene via germacrene A. *An incorporation of deuterium atoms into (+)-valencene could be detected, but due to coeluting substances no characteristic mass spectrum of d9-(+)-valencene could be obtained.
