PB-22 is synthetic cannabinoid that has been identified in herbal mixtures. It is a quinolinyl pentyl indole with a carboxylate group, abbreviated as QUPIC. methy-1-pentyl-1H-indole-3-Carboxylate is an analog of PB-22 that lacks the quinoline group. The physiological and toxicological properties of this compound are not known. This product is intended for forensic and research applications.