US Treasury OFAC Sanctions 23-Person Global Fentanyl Precursor Supply Network Tied to Sinaloa Cartel

The US Department of the Treasury's Office of Foreign Assets Control (OFAC) on April 24, 2026 designated 23 individuals and entities comprising a transnational synthetic opioid procurement network with direct ties to the Sinaloa Cartel — designated as a Foreign Terrorist Organization (FTO). The network spans India, Guatemala, and Mexico and specializes in procuring and shipping fentanyl precursor chemicals — including 4-Piperidone and N-Boc-4-Piperidone — to cartel laboratories. Critically, one kilogram of N-Boc-4-Piperidone can yield approximately 1.83 kilograms of finished fentanyl, enough for roughly 900,000 lethal doses. The State Department issued a complementary statement on April 24 entitled 'Countering a Transnational Criminal Network Fueling America's Illicit Fentanyl Crisis,' framing the sanctions as part of the broader US campaign against Sinaloa Cartel FTO supply chains. The action targeted the chemical supply chain underpinning Sinaloa fentanyl production rather than individual cartel operatives — a tactical shift toward cutting off upstream inputs. The sanctions freeze US-held assets and prohibit Americans from transacting with the designated parties. The action follows the April 20, 2026 visa restrictions on 75 Sinaloa Cartel associates announced by Secretary Rubio, representing a sustained escalation of US financial and diplomatic pressure on the Sinaloa Cartel network during the week of April 20–24, 2026.