Cancel anytime. This July 1, 2013, file photo, shows the exterior of the Mallinckrodt Pharmaceuticals office in St. Louis. Mallinckrodt PLC, an Irish pharmaceutical company with a big footprint ...

Drugmaker Mallinckrodt struck a deal to buy Endo in an effort to build a diversified pharmaceuticals company with a hefty U.S. footprint. The companies said Thursday they reached a definitive ...