Biocatalysis has a large impact in the pharmaceutical world. It offers numerous advantages for manufacturing pharmaceuticals with unique and highly desirable characteristics and offers new production opportunities for a wide range of drugs. The present book describes the pharmaceutical applications of biocatalysis in detail. It nicely brings together the essential of biocatalysis including reactions, the products and processes that utilize the methodology, and techniques for improving biocatalysis. This book will be a useful reference tool for anyone interested in the fields of biocatalysis and pharmaceuticals, whether they be graduate students or more experienced practioners.