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.
Isoindigo is a structural isomer of indigo and has a 5-membered cyclic amide (γ-lactam) arrangement. Oxygen atoms are identical (O1 = O2) in both isomers. DFT optimized structures are also shown with important bond distances (in Å) indicated.
