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.
Chemical structure of retinoids used in clinical practice. A natural retinoid molecule consists of four isoprenoid units containing a hydrophobic part, the central polyene linker, and the polar region. Synthetic retinoids are generated by modifying the hydrophobic part and the central polyene linker to increase molecular stability. This figure was designed by authors using Ketcher 2.4.
