This edition of the book is designed as per the syllabus of undergraduate course designed by various state government universities. The book is a concise explanation of nitrogen containing functional groups especially amines. The contents also cover history, preparations, physical and chemical properties of ammines. The book focuses on various reactions involved with amino group. The contents are explained in a very lucid language that may be very useful for the students to understand the subject more clearly. I am very thankful to my colleagues for their valuable support, suggestions and guidance during the course of writing this book. I hope this book come up with their and students' expectations.