JWH-373 ([5-(2-butylphenyl)-1-pentylpyrrol-3-yl]-naphthalen-1-ylmethanone) is a synthetic cannabinoid from the naphthoylpyrrole family which acts as an agonist of the CB1 (Ki = 60 ± 3nM) and CB2 (Ki = 69 ± 2nM) receptors, with a slight selectivity for the former. JWH-373 was first synthesized in 2006 by John W. Huffman and colleagues to examine the nature of ligand binding to the CB1 receptor.[1]
^Huffman JW, Padgett LW, Isherwood ML, Wiley JL, Martin BR (October 2006). "1-Alkyl-2-aryl-4-(1-naphthoyl)pyrroles: new high affinity ligands for the cannabinoid CB1 and CB2 receptors". Bioorganic & Medicinal Chemistry Letters. 16 (20): 5432–5. doi:10.1016/j.bmcl.2006.07.051. PMID16889960.