Chart 2. Some Possible Tautomers of 1 and of Its Singly Protonated Cation (Only s-trans Conformers Are Shown)a.
a Highlighted in red are the tautomers/conformers predicted as the most stable by computational analysis.
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.