Robert Sidney Cahn

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Robert Sidney Cahn (9 June 1899 – 15 June 1981) was a British chemist, best known for his contributions to chemical nomenclature and stereochemistry, particularly by the Cahn–Ingold–Prelog priority rules, which he proposed in 1956 with Christopher Kelk Ingold and Vladimir Prelog.[1]

Cahn was born in Hampstead, London. He became a fellow of the Royal Institute of Chemistry[2] and was editor of the Journal of the Chemical Society from 1949 until 1963, and he remained with the Society as Director of Publications Research until his retirement in 1965.[3]


  1. ^ George B. Kauffman (1998). "In Memoriam Vladimir Prelog (1906–1998): Some Personal Reminiscences". The Chemical Educator. 3 (2): 1–9. doi:10.1007/s00897980200a. 
  2. ^ Leonard T. Capell (1960). "An Introduction to Chemical Nomenclature". Journal of the American Chemical Society. 82: 5960. doi:10.1021/ja01507a051. 
  3. ^ David Hardy Whiffen, Donald Holroyde Hey (1991). The Royal Society of Chemistry: The First 150 Years. Royal Society of Chemistry. ISBN 0-85186-294-2. 


  • Robert S. Cahn (1959). An Introduction to Chemical Nomenclature. Butterworths.  and subsequent editions published in 1964, 1968, and 1974.