Adolf von Baeyer

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Johann Friedrich Wilhelm Adolf von Baeyer (German: [ˈaːdɔlf fɔn ˈbaɪɐ] ; 31 October 1835 – 20 August 1917) was a German chemist who synthesised indigo and developed a nomenclature for cyclic compounds (that was subsequently extended and adopted as part of the IUPAC organic nomenclature). He was ennobled in the Kingdom of Bavaria in 1885 and was the 1905 recipient of the Nobel Prize in Chemistry.