Figure 2.
Characterization of 4-2A by NMR: (A) 1H-NMR spectrum (n ≥ 1); and (B) 13C-NMR spectrum.
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.