This work by the leading researcher and teacher John McMurry is the quintessential textbook in Organic Chemistry today. The 4th edition of the book includes unique innovations that make it an ideal textbook for students of Chemistry, Biology, Health Sciences, Pharmacy, and other related fields. It is taught in hundreds of colleges and universities in North America, Canada, and Europe. The excellent pedagogical organization of the material helps the student understand the logic of Organic Chemistry, with an emphasis on the fundamental mechanistic similarities of reactions. Organic chemical reactions are cleverly combined with biochemical processes, resulting in a new chapter on Metabolic Processes. The important chapter on spectroscopy is covered in a completely modern way with updated spectra, while special emphasis has been placed on modern NMR techniques. The carefully selected "Interludes" of each chapter excitingly connect Chemistry with applications in everyday life. Each copy is equipped with special lenses that provide the ability for stereoscopic viewing of appropriately combined stereoscopic models. Its colored edition in Greek is an important addition to the Greek-language literature and a milestone in our publishing standards.