Opioid Chemical Structures

Alfentanil - chemical structure By Harbin / Public domain Buprenorphine - chemical structure By Harbin / Public domain   Codeine - chemical structure By NEUROtiker / Public domain Fentanyl - chemical structure By Harbin / Public domain Heroin - chemical structure By NEUROtiker / Public domain Hydrocodone - chemical structure By Yikrazuul / Public domain Hydromorphone - chemical structure By Yikrazuul / Public domain Meperidine - chemical structure By Ben Mills / Public domain Methadone - chemical structure By Calvero / Public domain Morphine - chemical structure By NEUROtiker / Public domain   Naloxone- chemical structure By Fvasconcellos / Public domain Naltrexone - chemical structure By Fvasconcellos / Public domain   Oxycodone - chemical structure By Fvasconcellos / Public domain Oxymorphone - chemical structure By RicHard-59 Tramadol - chemical structure By Harbin / Public domain Updated November 6, 2013