Karrer, Paul (1889-1971)

20th Century

Born: Moscow (Russia), 1889
Died: Zürich (Switzerland), 1971 

Karrer studied chemistry in Zürich under Alfred Werner, then he became a collaborator of Paul Ehrlich in Frankfurt. He became professor in Zürich in 1919. He investigated the constitution of carotinoids, flavins, and vitamins E, B2, and A (1930 correct formula of carotine, 1931 of vitamin A). In 1937 he was awarded the Nobel Prize for chemistry together with Walter Haworth. 

  The Nobel Prize in Chemistry 1937

"for his investigations on carotenoids, flavins and vitamins A and B2"