An opioid analgesic that is an analog of fentanyl and has been sold as a designer drug. It has an ED50 value of 0.02 mg/kg in mice.This makes it approximately one fifth as potent as fentanyl.
Side effects of fentanyl analogs are similar to those of fentanyl itself, which include itching, nausea. And also potentially serious respiratory depression, which can be life-threatening.
Furanylfentanyl is classified as an active ingredient in opioid analgesics or fentanyl analogues (Fentanyle), ie the substance acts as a painkiller. A misuse is the use of Fu-F as a designer drug, but with unpredictable side effects to the frequent and life-threatening respiratory depression.
In Sweden, the use of furanylfentanyl is banned, in the US, the substance is under supervision. In the EU is considered a ban, because certain nose drops in some Member States. Thus includes Germany – have emerged and reported deaths after their use. The chemical is mainly produced in China as a new chemical variant and to circumvent the restrictions that apply to the sale of the basic substance fentanyl.
The active substance is available on the market as a more water-soluble furanylfentanyl hydrochloride (CAS 101365-56-4).
The toxicological analysis is carried out, for example, by mass spectrometry. Among the measurable metabolites, a dihydrodiol metabolite, 4-anilino-N-phenethylpiperidine (4-ANPP) and a sulphate metabolite were identified.