David HeskDavid Hesk is Director of Radiochemistry in the Center for Drug Discovery at RTI International. After obtaining his Ph.D. studying hydrogen isotope exchange chemistry under the direction of Professor J.R. Jones, Dr. Hesk worked for 27 years in the Raiochemistry and Labeled Compound Synthesis groups at Schering-Plough and Merck where he was responsible for the synthesis, purification, and analysis of isotopically labelled compounds in support of pharmaceutical research. There he maintained his interest in hydrogen isotope exchange labelling (HIE) and published the first example of the application of Crabtree's catalyst in HIE in 1995. Read More Read Less