F6 Graphic (IMAGE) Purdue University Caption Purdue University researchers have developed a compound called F6 that is 16 times more potent than the closely related F6-15, highlighting the importance of piperidine modification on antibacterial activity. Credit (Image provided) 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.