Born 21 Apr 1889; died 18 Jun 1971 at age 82.
#Swiss #chemist who investigated the constitution of #carotenoids, #flavins, and #vitamins A and B2, for which he shared the 1937 #NobelPrize for Chemistry (with Sir Norman Haworth of Great Britain).
He studied plant #pigments, particularly the yellow carotenoids, which are related to the pigment in #carrots.
He determined the chemical #structure of the carotenoids (1930), showed that some of these substances are transformed into #vitamin A in the animal body, then determined the structure of vitamin A itself.
He also confirmed the constitution of #vitaminC proposed by Albert Szent-Györgyi, showed #lactoflavin to be part of the complex originally described as #vitaminB2 , and studied #vitaminE.
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