![](http://www.alamy.com/thumbs/6/DA659E2A-F0BA-4D1E-827D-851FC583729F/2M5BK4H.jpg)
Molecular model of the synthetic opioid analgesic (painkiller) cyclopropylfentanyl, an analogue of fentanyl. Recreational use often results in lethal
Molecular model of the synthetic opioid analgesic (painkiller) cyclopropylfentanyl, an analogue of fentanyl. Recreational use often results in lethal overdoses. Atoms are represented as spheres and are colour-coded: carbon (black), hydrogen (white), nitrogen (blue) and oxygen (red).
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Photo credit: © ***DEPENDS ON PIC***/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
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