Paul Karrer was a Swiss chemist and Nobel laureate.
April 21, 1889 in Moscow, Russia
June 18, 1971 in Zurich, Switzerland
Claim to Fame:
Karrer was a Swiss chemist who was awarded half the 1937 Nobel Prize in Chemistry for his research into carotenoids, flavins and vitamins A and B2. Carotenoids are organic pigments in plants. His investigations were into beta-carotene, the precursor to vitamin A. Flavins are organic compound sources of riboflavin, or vitamin B2.