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4-Fluorobutyryl Fentanyl

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Found in: 


Fentanyl

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Type/Reason added: 


Synthetic opioid, Fentanyl analog / Opioid effects

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Relative Potency: 


about 1/8 of fentanyl, 7 times more potent than morphine

Description and Classification

4-Fluorobutyryl Fentanyl (4-FBF): A synthetic opioid and an analog of fentanyl, modified with a fluorobutyryl group.

Relative Potency

Potency: About 1/8th of the potency of fentanyl, but still significantly more potent than morphine (approximately 7 times more potent).

Why It Is Added

Purpose

It is added to mimic the potent opioid effects of fentanyl. Often found in illicit drug markets as a substitute for or adulterant in fentanyl to enhance or prolong the effects.

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