Figure 1.
Diagnostic ions in the EI mass spectrum of 1 (A) and 2 (B). R = H (natural compound) and R = TMSi [trimethylsilyl derivative (m/z 90)]. * Peak not observed.
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.