JWH-147 is an analgesic drug used in scientific research, which acts as a cannabinoid agonist at both the CB1 and CB2receptors. It is somewhat selective for the CB2 subtype, with a Ki of 11.0nM at CB1 vs 7.1nM at CB2. It was discovered and named after Dr. John W. Huffman. JWH-147 was banned in Sweden on 1 October 2010 as a hazardous good harmful to health, after being identified as an ingredient in "herbal" synthetic cannabis products.
^Huffman JW, Padgett LW, Isherwood ML, Wiley JL, Martin BR. 1-Alkyl-2-aryl-4-(1-naphthoyl)pyrroles: New high affinity ligands for the cannabinoid CB1 and CB2 receptors. Bioorganic & Medicinal Chemistry Letters 2006; 16:5432-5435.