Pfizer CentreOne™ is a global contract manufacturer that focuses on API synthesis and sterile injectables fill-finish. For 40+ years, we've manufactured complex compounds for our biopharmaceutical partners. Our dedicated team of contract manufacturing experts guide your drug safely from development through commercialization, backed by the quality and resources of Pfizer. Our core capabilities include small-molecule steroid and hormone intermediates and APIs; custom small-molecule API synthesis; and sterile injectables fill-finish, where we are known for our experience with complex biologics and lyophilization. Pfizer CentreOne is the union of CMOs Pfizer CentreSource and Hospira One 2 One.