JWH-251 (1-pentyl-3-(2-methylphenylacetyl)indole) is a

synthetic cannabinoid Synthetic cannabinoids are a class of designer drug molecules that bind to the same receptors to which cannabinoids (THC, CBD and many others) in cannabis plants attach. These novel psychoactive substances should not be confused with synthetic ...

from the

phenylacetylindole Phenylacetylindoles are a class of synthetic cannabinoids. In the United States, all CB1 receptor agonists of the 3-phenylacetylindole class are Schedule I Controlled Substances. See also * Structural scheduling of synthetic cannabinoids To comb ...

family, which acts as a

cannabinoid agonist Cannabinoids () are several structural classes of compounds found in the cannabis plant primarily and most animal organisms (although insects lack such receptors) or as synthetic compounds. The most notable cannabinoid is the phytocannabinoid tet ...

with about five times selectivity for CB₁ with a K_i of 29 nM and 146 nM at CB₂. Similar to the related 2'-methoxy compound

JWH-250 JWH-250 or (1-pentyl-3-(2-methoxyphenylacetyl)indole) is an analgesic chemical from the phenylacetylindole family that acts as a cannabinoid agonist at both the CB1 and CB2 receptors, with a ''K''i of 11 nM at CB1 and 33 nM at CB2. U ...

, the 2'- chloro compound

JWH-203 JWH-203 (1-pentyl-3-(2-chlorophenylacetyl)indole) is an analgesic chemical from the phenylacetylindole family that acts as a cannabinoid agonist with approximately equal affinity at both the CB1 and CB2 receptors, having a Ki of 8.0 nM at ...

, and the 2'- bromo compound

JWH-249 JWH-249 (1-pentyl-3-(2-bromophenylacetyl)indole) is a synthetic cannabinoid from the phenylacetylindole family, which acts as a cannabinoid agonist with about 2.4 times selectivity for CB1 with a Ki of 8.4 ± 1.8 nM and 20 � ...

, JWH-251 has a

phenyl In organic chemistry, the phenyl group, or phenyl ring, is a cyclic group of atoms with the formula C6 H5, and is often represented by the symbol Ph. Phenyl group is closely related to benzene and can be viewed as a benzene ring, minus a hydrogen ...

acetyl In organic chemistry, acetyl is a functional group with the chemical formula and the structure . It is sometimes represented by the symbol Ac (not to be confused with the element actinium). In IUPAC nomenclature, acetyl is called ethanoyl, ...

group in place of the

naphthoyl Naphthalene is an organic compound with formula . It is the simplest polycyclic aromatic hydrocarbon, and is a white crystalline solid with a characteristic odor that is detectable at concentrations as low as 0.08 ppm by mass. As an aromati ...

ring used in most

aminoalkylindole Aminoalkylindoles (AAIs) are a family of cannabinergic compound that act as a cannabinoid receptor agonist. They were invented by pharmaceutical company Sterling-Winthrop in the early 1990s as potential nonsteroidal anti-inflammatory agents. Leg ...

cannabinoid compounds. In the United States, all CB₁ receptor agonists of the 3-phenylacetylindole class such as JWH-251 are

Schedule I Controlled Substance This is the list of Schedule I drugs as defined by the United States Controlled Substances Act. 21 CFRbr>1308.11(CSA Sched I) with changes through (Oct 18, 2012). Retrieved September 6, 2013. The following findings are required for drugs to be pl ...

References

JWH cannabinoids Phenylacetylindoles Designer drugs CB1 receptor agonists CB2 receptor agonists {{Cannabinoid-stub