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.
The expected structure of the enol tautomer 2,4-I of isocytosine 1 in a complex with thymine derivative T (left), and the structure of the imino tautomer 1,3-I of compound 7 in a complex with diaminopyridine (DAP, right). These complexes were not observed.
