Scheme 1.
Structural formulas and atom numbering for nucleobases and the general formula for the ribonucleosides (Z=Y =OH), ribonucleotides (Z=phosphate, Y=OH) and the corresponding 2-deoxyribo-derivatives (Y=H).
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.