A Better Class of Cancer Drug (image) San Diego State University Share Print E-Mail Caption The left-most molecule shows an unstable atropisomer, its axis of chirality shown by the red arrow. The two on the right are stable "arrangements." Credit Jeffrey Gustafson Usage Restrictions None Share Print E-Mail 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.