JWH-047
JWH-047 is a selective cannabinoid ligand that binds to both cannabinoid [receptor type 1|CB1] and CB2. It has a bindining affinity of Ki = 0.9 nM for the CB2 subtype, and more than 65 times selectivity over the CB1.
In the United States, all CB1 receptor agonists of the 3-indole class such as JWH-047 are Schedule I Controlled Substances.