5-fluoro AB-PINACA is a fluorinated derivative of AB-PINACA , a synthetic cannabinoid developed on an indazole base.[1] PX 2 is an analog of 5-fluoro AB-PINACA in which an isopropyl substituent has been replaced with a benzyl group. The physiological and toxicological properties of this compound are not known. This product is intended for forensic and research 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).