Emerging Synthetic Opioid Cychlorphine, Up to 10x More Potent Than Fentanyl, Linked to San Francisco Teen Death and Multi-State Overdoses

San Francisco police arrested four suspects on September 8-9, 2026, seizing over 20,000 counterfeit pills and multiple firearms in an investigation triggered by the April 7, 2026, fatal overdose of 16-year-old Dante Lacourte. The teen's toxicology confirmed cychlorphine (N-propionitrile chlorphine), a novel synthetic opioid first identified in U.S. DEA labs in April 2024 and confirmed by forensic experts later that year.[1][2]

Cychlorphine belongs to the orphine class and is estimated to be up to 10 times more potent than fentanyl, with overdoses potentially requiring multiple doses of naloxone for reversal. It evades standard fentanyl test strips and routine hospital opioid screens.[3][4] The White House Office of National Drug Control Policy (ONDCP) issued a drug threat notice on April 30, 2026, highlighting its emergence after 106 detections in 10 states in 2025, concentrated in the South, Midwest, and Northeast, with highest prevalence in Ohio, Texas, and Tennessee.[5]

Nationally, at least 55 deaths have been linked to cychlorphine between 2025 and early 2026, with East Tennessee's Knox County Regional Forensic Center reporting clusters including 41 deaths from July 2025 to February 2026 and later updates reaching 58-63 cases. Additional fatalities reported in states like Illinois (Cook County: 7 in 2026), California, Kentucky, and others, with forensic data from the Center for Forensic Science Research and Education (CFSRE) confirming cases across nearly 20 states and Canada.[6][7] The DEA has moved to temporarily schedule cychlorphine and related analogs under Schedule I.[8]

SFPD Chief Derrick Lew stated the arrests followed months of investigation, including controlled buys, leading to warrants at locations on O'Farrell Street, Executive Park Blvd., and Newhall Ave. Suspects Nicholas Wallace (46), Sharonee Hyson (44), Leander Pitts (46), and Starr Lamare (39) face charges including narcotics possession for sale and firearms violations. The probe remains active.[9]

Public health officials note cychlorphine's entry into counterfeit pill markets (e.g., oxycodone, Xanax) amplifies risks for young users unaware of contents, with the Lacourte case marking San Francisco's first confirmed death from the substance. Mayor Daniel Lurie and health directors have issued warnings emphasizing the need for expanded testing and naloxone access.[10]