Keywords: Lofentanil molecule spacefill.png Space-filling model of the lofentanil molecule an opiod analgesic C H O N 2015-01-07 own DS Visualizer Jynto more from this user Ball-and-stick version cc-zero Images by Jynto Carboxylate esters Methyl esters Anilidopiperidines N N-disubstituted primary amides Fentanyl analogs Space-filling models |