| | Paul Karrer (Site not responding. Last check: 2007-10-21) |
 | | Paul Karrer (April 21, 1889-June 18, 1971) was a Swiss (Swiss: The natives or inhabitants of Switzerland) biochemist (biochemist: Someone with special training in biochemistry) best known for his work on vitamin (vitamin: Any of a group of organic substances essential in small quantities to normal metabolism) s. |
 | | Karrer was born in Moscow (Moscow: A city of central European Russia; formerly capital of both the Soviet Union and Soviet Russia; since 1991 the capital of the Russian Federation), Russia (Russia: A federation in northeastern Europe and northern Asia; formerly Soviet Russia; since 1991 an independent state) on April 21, 1889. |
 | | Karrer's early research concerned complex metal compounds but his most important work has concerned plant pigments, particularly the yellow carotenoid (carotenoid: Any of a class of highly unsaturated yellow to red pigments occurring in plants and animals) s. |
| www.absoluteastronomy.com /reference/paul_karrer (588 words) |