Audrey Strauss, Acting United States Attorney for the Southern District of New York, announced that Richard Castro, a/k/a “Chemsusa,” a/k/a “Chems_usa,” a/k/a “Chemical_usa,” a/k/a “Jagger109,” was sentenced to 210 months in prison today for participating in a conspiracy to distribute carfentanil, fentanyl, and a fentanyl analogue over the “dark web,” including on AlphaBay and Dream Market, and for laundering the proceeds of his narcotics trafficking.