Figure 5.
1H NMR spectra of S1 (blue), S2 (red), S7 (green), S3 (purple), S6 (yellow), S4 (orange), and S5 (light green) (from the bottom to the top).
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.