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  • Paul Karrer
  • Paul Karrer (April 21, 1889 - June 18, 1971) was a Swiss biochemist best known for his work on vitamins. He and Walter Norman Haworth won the Nobel Prize for Chemistry in 1937.

    Karrer was born in Moscow, Russia on April 21, 1889.
    He studied chemistry at the University of Zurich under Alfred Werner and after gaining his Ph.D.
    In 1911, he spent a further year as assistant in the Chemical Institute. He then took a post as chemist with Paul Ehrlich at the Georg Speyer Haus, Frankfurt-am-Main.
    In 1919 he became Professor of Chemistry and Director of the Chemical Institute.
    His earlier researches concerned complex metal compounds but his most important work has concerned plant pigments, particularly the yellow carotenoids. He elucidated their chemical structure showed that some of these substances are transformed in the body into vitamin A. His work led to the establishment of the correct constitutional formula for beta-carotene, the chief precursor of vitamin A; the first time that the structure of a vitamin or provitamin had been established. George Wald worked briefly in Karrer's lab while studying the role of vitamin A in the retina. Later, Karrer confirmed the structure of ascorbic acid (vitamin C) and extended his researches into the vitamin B2 and E. His important contributions to the chemistry of the flavins led to identification of lactoflavin as part of the complex originally thought to be vitamin B2.
    He published very many papers, and received many honours and awards, including the Nobel Prize in 1937. His textbook Lehrbuch der Organaischen Chemie (Textbook of Organic Chemistry) was published in 1927, went through thirteen editions, and was published in seven languages.
    He was married, with two sons. He died June 18 1971.

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    tags:Paul Karrer|The Nobel Prize in Chemistry 1937
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