Chemotaxonomy (from chemistry and taxonomy), also called chemosystematics, is the attempt to classify and identify organisms (originally plants), according to demonstrable differences and similarities in their biochemical compositions. The compounds studied in most of the cases are mostly proteins, amino acids and peptides

John Griffith Vaughan was one of the pioneers of chemotaxonomy.

See also

• Jeffrey Harborne
• John Griffith Vaughan