Azetidine 2 (IMAGE) Rice University Caption A model shows an exposed blue nitrogen in a four-member ring, the active part of an azetidine molecule. Rice University scientists synthesized the molecule to simplify the process of drug design. Credit Jeff Fitlow/Rice University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.