JWH-147 is an analgesic

Analgesic

An analgesic is any member of the group of drugs used to relieve pain . The word analgesic derives from Greek an- and algos ....

 drug used in scientific research, which acts as a cannabinoid agonist at both the CB₁ and CB₂ receptors

Receptor (biochemistry)

In biochemistry, a receptor is a molecule found on the surface of a cell, which receives specific chemical signals from neighbouring cells or the wider environment within an organism...

. It is somewhat selective for the CB₂ subtype, with a Ki

Dissociation constant

In chemistry, biochemistry, and pharmacology, a dissociation constant is a specific type of equilibrium constant that measures the propensity of a larger object to separate reversibly into smaller components, as when a complex falls apart into its component molecules, or when a salt splits up into...

 of 11.0nM at CB₁ vs 7.1nM at CB₂. It was discovered and named after Dr. John W. Huffman

John W. Huffman

John William Huffman is a professor emeritus of organic chemistry at Clemson University who first synthesised many novel cannabinoids, including JWH-007, JWH-015, JWH-018, JWH-019, JWH-030, JWH-051, JWH-073, JWH-081, JWH-122, JWH-133, JWH-147, JWH-171, JWH-182, JWH-203, JWH-210, JWH-250, JWH-307,...

. JWH-147 was banned in Sweden on 1st October 2010 as a hazardous good harmful to health, after being identified as an ingredient in "herbal" synthetic cannabis products.