Stereochemistry has always occupied a central position and is pivotal to the practice of organic chemistry. A solid understanding of this subject is indeed critical to subsequent success in a science career. Stereochemistry is, therefore, a core constituent both at the undergraduate and postgraduate chemistry courses.This seventh edition is extensively revised and enlarged by adding new material to take account of recent developments and extensive amendments have been made to improve clarity. The key features of this new addition are: * A brand new design. Incorporation of basic principles in boxes directly links the students to the main text. * A large number of exercises with their solutions have been now added in each chapter. These exercises are set at appropriate places so that the students can test their command of a particular topic. * New problems have been added at the end of each chapter. * Chemical illustrations have been modified and developed for clarity and information. Generally the figures contain text as well, to decrease the need to refer back and forth to the text and for better understanding.