This publication identifies the main types of natural products, their classifications, structural features, physical and chemical properties, schemes of characteristic chemical reactions, research methods, significant biological functions, practical application, and natural sources. The textbook contains eight chapters: Amino acids, peptides, proteins; Enzymes; Lipids; Carbohydrates; Vitamins; Hormones; Nucleic acids; Other natural products. It is intended for students of institutions of higher education studying in biotechnological, chemical and other related specialties, and can be useful to everyone who is interested in natural organic substances with biological activity, their role in the life of living organisms, and application in practical human activities
