Dr. Xu has worked with Prof. Raymond for over 30 years, and has been instrumental in the development of Ken’s chemistry during that time, both at UCB and at Lumiphore. Among his many important contributions, Dr. Xu designed and synthesized the macrocyclic bifunctional chelator Lumi4, directly enabling the core revenue stream for the company and making Lumiphore the proprietary owner of a best-in-class Tb(III) photoluminescent dye. His expertise in synthetic chemistry and relentless scientific curiosity are invaluable assets for the continued success and direction of the company.