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.
Full MS elucidation of the licochalcone A–DPPH adduct (A) and the licochalcone A–licochalcone A dimer (B). The MS spectra were obtained in the negative ion mode, and the charge imposed by the MS field was not marked. Other reasonable cleavages should not be excluded in the MS elucidation.
