This book will focus on recent developments in isotope labeling methods for structural studies of small molecules, peptides, proteins and nucleic acids. The aim of the book is to serve as a compendium of isotope labeling for the biomolecular NMR community providing comprehensive coverage of the existing methods and latest developments along with protocols and practical hints on the various experimental aspects. The book will cover a wide range of topics in isotope labeling under one title including emerging areas of metabolonomics and solid state NMR.