Fentanyl Laced With Toxic Chemical BTMPS Raises Alarms Nationwide, Experts Warn Of Danger Image Cannabis News September 24, 2024 As if adulterating drugs with fentanyl were not enough, an industrial chemical known as bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate, or BTMPS, is now appearing in illicit fentanyl across the U.S. Originally used in plastics for UV protection, BTMPS has been detected in fentanyl samples marking a Recreational Marijuana News by Patricio Liddle