By Maurice Tamman, Laura Gottesdiener and Stephen Eisenhammer
A cardboard box half the size of a loaf of bread bore a shipping label declaring its contents: “Adapter.” It was delivered in October to a Reuters reporter in Mexico City.
There was no adapter inside that package. Instead, sealed in a metallic Mylar bag was a plastic jar containing a kilogram of 1-boc-4-piperidone, a pale powder that’s a core ingredient of fentanyl. It was enough to produce 750,000 tablets of the deadly drug.