Azetidine 1 (IMAGE) Rice University Caption Rice University chemists developed a synthetic pathway to azetidines, molecules that expose nitrogen atoms that serve as precursors to drug design. Credit László Kürti/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.