Adolf Otto Reinhold Windaus(German pronunciation:[ˈaːdɔlfˈvɪndaʊs]ⓘ; 25 December 1876 – 9 June 1959) was a Germanchemistwho won aNobel Prize in Chemistryin 1928 for his work onsterolsand their relation tovitamins. He was thedoctoral advisorofAdolf Butenandtwho also won a Nobel Prize in Chemistry in 1939. Fields: Organic chemistry, biochemistry