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.
Mechanistic investigation of the formation of a mixed anhydride from Val-NCA 1 and octanoic acid. (a) (a) Schematic of the reaction between 1 and either 16O-enriched or 18O-enriched octanoic acid with observable [M – H]–1 ions. (b) MS/MS product ion spectra highlighting the isolated 16O-enriched species and its fragmentation product. (c) MS/MS product ion spectra highlighting the isolated 18O-enriched species and their fragmentation products.
