5-chloro AB-PINACA (Synonyms: 5-chloro ABP)

AB-PINACA is a synthetic cannabinoid recently identified in illegal herbal products.[1] Structurally, this designer drug is developed on an indazole base, which distinguishes it from the many JWH compounds having an indolyl base.[1][2] 5-chloro AB-PINACA is a derivative of AB-PINACA featuring a chlorine atom added to the terminal carbon of the pentyl group. The physiological and toxicological properties of this compound have not been determined. This product is intended for research and forensic applications.

Reference:
[1]. Uchiyama, N., Matsuda, S., Wakana, D., et al. New cannabimimetic indazole derivatives, N-(1-amino-3methyl-1-oxobutan-2-yl)-1-pentyl-1H-indazole-3-carboxamide (AB-PINACA) and N-(1-amino-3-methyl-1-oxobutan-2-yl)-1-(4-fluorobenzyl)-1H-indazole-3-carboxamide (AB-FUBINACA) identified as designer drugs in illegal products. Forensic Toxicol. 31(1), 93-100 (2013).
[2]. Huffman, J.W., Zengin, G., Wu, M.J., et al. Structure-activity relationships for 1-alkyl-3-(1-naphthoyl)indoles at the cannabinoid CB1 and CB2 receptors: Steric and electronic effects of naphthoyl substituents. New highly selective CB2 receptor agonists. Bioorg. Med. Chem. 13, 89-112 (2005).