XLR-11
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XLR-11 (5"-fluoro-UR-144 or 5F-UR-144) is a drug that acts as a potent
agonist An agonist is a chemical that activates a Receptor (biochemistry), receptor to produce a biological response. Receptors are Cell (biology), cellular proteins whose activation causes the cell to modify what it is currently doing. In contrast, an R ...
for the
cannabinoid receptor Cannabinoid receptors, located throughout the body, are part of the endocannabinoid system of vertebrates a class of cell membrane receptors in the G protein-coupled receptor superfamily. As is typical of G protein-coupled receptors, the cann ...
s CB1 and CB2 with EC50 values of 98 nM and 83 nM, respectively. It is a 3-(tetramethylcyclopropylmethanoyl)indole derivative related to compounds such as UR-144, A-796,260 and A-834,735, but it is not specifically listed in the patent or scientific literature alongside these other similar compounds, and appears to have not previously been made by
Abbott Laboratories Abbott Laboratories is an American multinational medical devices and health care company with headquarters in Abbott Park, Illinois, in the United States. The company was founded by Chicago physician Wallace Calvin Abbott in 1888 to formulate k ...
, despite falling within the claims of patent WO 2006/069196. XLR-11 was found to produce rapid, short-lived hypothermic effects in rats at doses of 3 mg/kg and 10 mg/kg, suggesting that it is of comparable potency to APICA and
STS-135 STS-135 ( ISS assembly flight ULF7) was the 135th and final mission of the American Space Shuttle program. It used the orbiter '' Atlantis'' and hardware originally processed for the STS-335 contingency mission, which was not flown. STS-135 ...
.


Detection

A forensic standard for this compound is available, and a representative mass spectrum has been posted on Forendex.


Recreational use

XLR-11 was instead first identified by laboratories in 2012 as an ingredient in synthetic cannabis smoking blends, and appears to be a novel compound invented specifically for grey-market recreational use.


Legal Status

XLR-11 was banned in New Zealand by being added to the temporary class drug schedule, . The U.S. Drug Enforcement Administration (DEA) made XLR11 illegal under the Federal Controlled Substances act for the foreseeable future . It has also been banned in Florida . Arizona banned XLR-11 on 3 April 2013. , XLR-11 is a controlled substance in China. XLR-11 is banned in the Czech Republic.


Side effects

XLR-11 has been linked to hospitalizations due to its use.


Toxicity

XLR-11 has been linked to
acute kidney injury Acute kidney injury (AKI), previously called acute renal failure (ARF), is a sudden decrease in renal function, kidney function that develops within seven days, as shown by an increase in serum creatinine or a decrease in urine output, or both. ...
in some users, along with AM-2201.


See also

* FAB-144 *
JWH-018 JWH-018 (1-pentyl-3-(1-naphthoyl)indole, NA-PIMO or AM-678) is an analgesic chemical from the naphthoylindole family that acts as a full agonist at both the CB1 and CB2 cannabinoid receptors, with some selectivity for CB2. It produces effe ...
*
STS-135 STS-135 ( ISS assembly flight ULF7) was the 135th and final mission of the American Space Shuttle program. It used the orbiter '' Atlantis'' and hardware originally processed for the STS-335 contingency mission, which was not flown. STS-135 ...
* UR-144 * XLR-12


References

{{Cannabinoids Cannabinoids Designer drugs Organofluorides Indoles Tetramethylcyclopropanoylindoles Cyclopropanes