Brown's fourth edition continues to offer the basics of organic chemistry, emphasizing the interrelationships between organic chemistry and other areas of science. This edition has key terms and concepts added to key reactions at the end of each chapter, two new mini essays - Alkaloids and Biogenic Amines and Emotion - and the remaining mini-essays have been thoroughly revised and updated. The presentation of amines now comes before carbonyl chemistry, and end-of-chapter problems are divided into groups that correspond with the chapters' major sections. Frequent examples/solution/problem sequences help students to improve their ability to recognize and solve organic chemistry problems. Each example is followed by a similar problem for the student to solve. This book should be of interest to introductory undergraduate courses in general and organic chemistry and biochemistry.