Mr Brian Samas is an industrial scientist with over 22 years of experience at Pfizer Inc. Currently he holds a position of Sr. Principal Scientist in the Materials Science group at Pfizer. He holds degrees in Chemistry from DePaul University and Eastern Michigan University and an MBA from University of Rhode Island. His area of expertise is X-ray crystallography and solid state chemistry. Keynote Presentation: Five Degrees of Separation: Characterization and Temperature Stability Profiles for the Polymorphs of PD-0118057 (Molecule XXIII)