RÖMPP Encyclopedia Natural Products covers all classes of natural products:

• amino acids
• peptides and proteins
• carbohydrates
• antibiotics
• steroids
• terpenoids
• porphyrins
• vitamins
• aroma/flavor compounds
• quinones
• pigments
• lipids
• toxins
• medicinal herbs
• substances from mosses and ferns
• fungi
• marine organisms
• lichen substances
• natural products with relevance for pharma, crop protection and technical use

Rather than being a mere listing of substances, each entry explains all interesting aspects of a given substance, including:

• the chemical structure, stereochemistry and absolute configuration
• the nomenclature: CAS names, trivial names, synonyms
• the molecular formula and molecular weight
• biological properties such as pharmacology, toxicology and other biochemical and physiological effects
• physical properties such as melting and boiling point, optical rotation, solubility, color and dissociation constants
• occurrence and biological sources
• biosynthesis pathways
• usage and application, medical uses
• bibliographic data with current literature

Additionally, RÖMPP Encyclopedia Natural Products provides descriptions of the different substance classes and important analytical methods, contains comprehensive indices of Latin species names and molecular formulae as well as a vast amount of cross referencing.