Fentanyl Powder (also known as fentanil) with a rapid onset and short duration of action.
It is a strong agonist at the u opioid receptors.
Fentanyl is estimated to be between 50 and 100 times as potent as morphine.
Fentanyl Powder was first made by Paul Janssen in 1960,following the medical inception of
pethidine (also known as meperidine, marketed as Demerol) several years earlier.
Janssen developed fentanyl by assaying analogues of the structurally
related drug pethidine for opioid activity
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