fentanyl fentanil opioid analgesic drug molecule |
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| navigate by keyword : fentanyl fentanile fentanyle fentanil analgesic pain synthetic opioid anesthetic anaesthetic transdermal patch lollipop analgesia chronic cancer palliative care overdose narcotic recreational carbon hydrogen oxygen nitrogen molecule atoms atomic model molecular compound composition chemical chemistry bond structure formula circle ring line drawing skeletal |
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| Fentanyl (fentanil) opioid analgesic drug molecule. Conventional skeletal formula and stylized representations |
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