Paul Karrer
1889-1971
Swiss chemist who won the Nobel Prize for chemistry in 1937 for determining the three-dimensional structures of numerous organic (carbon-containing) compounds.
Karrer was the first to determine the structure of a vitamin, thatof vitamin A. He also investigated the structures of carotenoids, yellow-to-red pigments found, for example, in carrots and lobster shells. The structure of carotenoids is closely related to that of vitamin A, and Karrer showed how the body can use carotenoids to produce this vitamin.
This is the complete article, containing 78 words
(approx. 1 page at 300 words per page).
