Tadhg P. Begley Tadhg P. Begley received his B.Sc. from National University of Ireland and his Ph.D. at the California Institute of Technology. Dr. Begley is the recipient of many awards, including the Merck Faculty Development Award and the Camille and Henry Dreyfus Teacher-Scholar Award. His research group uses the principles and techniques of organic chemistry to study complex organic transformations found in vitamin biosynthetic pathways. In addition to The Organic Chemistry of Biological Pathways, Dr. Begley has edited Cofactor Biosynthesis: A Mechanistic Perspective.