JWH-018 (1-Pentyl-3-(1-Naphthoyl)Indole) is an analgesic drug from the aminoalkylindole family, which acts as a cannabinoid agonist at both the CB1 and CB2 receptors, with some selectivity for CB2.1 It produces effects in animals very similar to those of THC itself, but with a shorter duration of action, and is currently being researched as a potential analgesic to be administered by transdermal patch.2
^ Aung MM, Griffin G, Huffman JW, Wu MJ, Keel C, Yang B, Showalter VM, Abood ME, Martin BR. Influence of the N-1 alkyl chain length of cannabimimetic indoles upon CB1 and CB2 receptor binding. Drug and Alcohol Dependance 2000; 60:133-140.