4-FPP Test Kit - Purity Test Kit for 4-FPP

Find 4-FPP purity test kits and reagent tests selected for fast substance identification and cleaner checking. 4-FPP was first identified as a urinary metabolite of the sedative niaprazine in 1982 and subsequently sold (2003-2008) in New Zealand "party pills" together with BZP under brand names including "The Big Grin," "Mashed," and "Extreme Beans." In vitro, it is a high-efficacy 5-HT1A agonist (Ki ≈ 11 nM), moderate 5-HT2A/2C partial agonist, and weak SERT/NET releaser. DAT activity is negligible, explaining its low stimulant euphoria compared to BZP. Subjectively, it produces light empathic warmth, mild color enhancement/tracers, and prominent vasoconstrictive "head pressure." Nausea, migraine-like headaches, myalgia, and anxiety are common above ~100 mg. Unlike BZP, 4-FPP inhibits several hepatic CYPs (notably 1A2, 2D6, 3A4), which can prolong co-administered drugs. Rodent LD50 (oral) ≈ 400 mg/kg; no confirmed fatalities as sole agent, but severe hyperthermia, seizures, and rhabdomyolysis have been reported in polydrug cases.