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4-FIBF, 4-Fluorobutyrylfentanyl (also known as 4-FBF and p-FBF) is an opioid analgesic that is an analog of butyrfentanyl .It is closely related to 4-fluorofentanyl,


4-FIBF,4-Fluorobutyrylfentanyl (also known as 4-FBF and p-FBF) is an opioid analgesic that is an analog of butyrfentanyl.para-FIBF,4-Fluoroisobutyryl fentanyl,p-Fluoroisobutyryl fentanyl,para-Fluoroisobutyryl fentanyl

It is closely related to 4-fluorofentanyl,


4-Fluoroisobutyryl fentanyl
para-Fluoroisobutyryl fentanyl

FIBF (hydrochloride) is an analytical reference material that is structurally categorized as an opioid. The physiological and toxicological properties of this compound are not known. This product is intended for research and forensic application.

RChemicals is a one of the leaders in the distribution of Research Chemicals as well as an international research chemicals manufacturing company.para-FIBF

We work along side with a highly professional laboratory mainly creating custom synthesis, research, and pharmaceutical chemicals.

At this time, we have warehouses in Hong Kong, USA, Canada, China, Ukraine and EU from where all products are dispatched.

Our highly developed distribution network guarantees that all products you receive will be on time and will be sent to the most convenient locations for pickup,and delivery to your scheduled destination,we are expeditious and reliable.

Our customers satisfaction is our ultimate goal, and we are here to serve our customers , make a wise decision by making all your order from RChemicals you are guaranteed of fast shipment of all your orders to your given address.

We also provide various shipping services that deliver products to our clients in various markets and in many different locations around the globe.4-Fluoroisobutyryl fentanyl,para-Fluoroisobutyryl fentanyl

Products found on this website are sold for the sole purpose of research and education. None of our products is sold for human or animal consumption or for any type of illegal usage. 3-CMC

  • p-FIBF
  • para-FIBF
  • 4-Fluoroisobutyryl fentanyl
  • p-Fluoroisobutyryl fentanyl
  • para-Fluoroisobutyryl fentanyl
  • 4-fluoro iBF
  • p-fluoro iBF
  • para-fluoro iBF
  • 4-fluoro Isobutyryl fentanyl
  • p-fluoro Isobutyryl fentanyl
  • para-fluoro Isobutyryl fentanyl

4-Fluorobutyrfentanyl and has been sold online as a designer drug.It is closely related to 4-fluorofentanyl, which has an EC50 value of 4.2 nM for the human μ-opioid receptor. 4-fluoroisobutyrylfentanyl is a highly selective μ-opioid receptor agonist whose analgesic potency is almost ten times of that reported for morphine.p-Fluoroisobutyryl fentanyl

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