21. Karrer, Paul Swiss organic chemist who synthesized various vitamins and determined their structural formulas, for which he shared the 1937 Nobel Prize for Chemistry. http://www.cartage.org.lb/en/themes/Biographies/MainBiographies/k/Karrer/1.html

Karrer, Paul Swiss organic chemist who synthesized various vitamins and determined their structural formulas, for which he shared the 1937 Nobel Prize for Chemistry. He also worked on vegetable dyes. Karrer's early work concerned vitamin A and its chief precursor, carotene. Karrer worked out its correct constitutional formula in 1930, although he was not to achieve a total synthesis until 1950. He showed in 1931 that vitamin A is related to the carotenoids, substances that give a yellow, orange, or red colour to many foodstuffs. There are in fact two A vitamins. Karrer proved that there are several isomers of carotene, and that vitamin A1 is equivalent to half a molecule of its precursor -carotene. In 1935, he solved the structure of vitamin B2 (riboflavin). He also investigated vitamin E (tocopherol), which is a group of closely related compounds, and in 1938 he solved the structure of -tocopherol, the most biologically active component. In 1927, Karrer published Lehrbuch der organischen Chemie/Textbook of Organic Chemistry.

22. Karrer, Paul | Definition Of Karrer, Paul | HighBeam.com: Online Dictionary Find out what Karrer, Paul means A Dictionary of Scientists has the definition of Karrer, Paul. Research related newspaper, magazine, and journal articles at HighBeam.com http://www.highbeam.com/doc/1O84-KarrerPaul.html

23. Karrer, Paul - A Britannica Widget -- Britannica Online Encyclopedia Quickly and easily explore key people, places, and topics via gadgets based on the Encyclopaedia Britannica, one of the world's most trusted sources of information. http://www.britannica.com/bps/widget/57773/Paul-Karrer

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24. Paul Karrer: Biography From Answers.com Karrer, Paul, 18891971, Swiss organic chemist, Ph.D. Univ. of Z rich, 1911. From 1912 to 1918, Karrer was a chemist at the Georg Speyer Haus, Frankfurt-am-Main. http://www.answers.com/topic/paul-karrer

var isReferenceAnswers = true; BodyLoad('s'); On this page Library Animal Life Health History, Politics, Society ... Technology Paul Karrer Scientist: Paul Karrer Home Library Science Dictionary of Scientists Swiss chemist (1889–1971) Karrer, the son of a Moscow dentist, was educated at the University of Zurich where he obtained his PhD. After working in Frankfurt he returned to the University of Zurich in 1918, where he served as professor of chemistry until his retirement in 1959. He began his research career working on the chemistry of plant pigments . Although Karrer tackled a wide variety of such pigments his most significant result was his determination, by 1930, of the structure of carotene , the yellow pigment found in such vegetables as carrots . By 1931 he had also worked out the structure of vitamin A and synthesized it. The similarity between the two molecules did not escape Karrer's attention and it was later shown that vitamin A is derived from the breakdown of carotene in the liver. Karrer went on to synthesize vitamin B riboflavin ) in 1935 and vitamin E (tocopherol) in 1938.

25. Karrer, Paul Karrer, Paul (b. April 21, 1889, Moscow, Russiad. June 18, 1971, Z rich, Switz.), Swiss chemist who investigated the constitution of carotenoids, flavins, and vitamins A and http://www.uv.es/EBRIT/micro/micro_314_44.html

Britannica CD Index Articles Dictionary Help Karrer, Paul carotenoids , flavins, and vitamins A and B , for which he shared the 1937 Nobel Prize for Chemistry with Sir Walter Haworth of Great Britain. Karrer's best-known researches were on plant pigments , particularly the yellow ones (carotenoids), which are related to the pigment in carrots. He not only elucidated the chemical structure of the carotenoids but also showed that some of these substances are transformed into vitamin A in the animal body. In 1930 he established the correct formula for carotene vitamin B , and studied vitamin E. His Lehrbuch der organischen Chemie Organic Chemistry ) passed through many editions in the 1930s and '40s. Related Propaedia Topics: Vitamins Dyestuffs and pigments

26. Karrer Paul - Science Definition Definition of Karrer Paul from The American Heritage Science Dictionary. http://science.yourdictionary.com/karrer-paul

27. Karrer Paul Paul Karrer B iography Nobel Prize Winner (1937) Paul Karrer (April 21, 1889 – June 18, 1971) was a Swiss organic chemist best known for his work on vitamins. http://www.thebestedu.com/bookmarks/chem/karrer-paul.htm

Paul Karrer B iography - Nobel Prize Winner (1937) Paul Karrer (April 21, 1889 – June 18, 1971) was a Swiss organic chemist best known for his work on vitamins. He and Walter Haworth won the Nobel Prize for Chemistry in 1937. Biography Birth Karrer was born in Moscow, Russia on April 21, 1889. His parents, Paul Karrer and Julie Lerch, were Swiss nationals. Education In 1892 Karrer's family returned to Switzerland where he was educated at Wildegg and at the grammar school in Lenzburg, Aarau, where he matriculated in 1908. 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. Research Karrer's early research 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.

28. AccessScience | Biography | Karrer, Paul About AccessScience. AccessScience is a subscriptionbased website that features continually updated scientific and http://www.accessscience.com/content.aspx?id=M0090599

29. Karrer, Paul Karrer, Paul (18891971) 20th Century. Born Moscow (Russia), 1889 Died Z rich (Switzerland), 1971 . Karrer studied chemistry in Z rich under Alfred Werner, then he became a http://www.euchems.org/Distinguished/20thCentury/karrer.asp

Contact us Home 100 Distinguished 20th Century Karrer, Paul 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. Related Links The Nobel Prize in Chemistry 1937 "for his investigations on carotenoids, flavins and vitamins A and B2" External links will open in a new browser window Main Links About EuCheMS EuCheMS News Governance and Structure EuCheMS Chemistry Congresses ... EuCheMS Networking Scheme © EuCheMS 2010

30. Paul Karrer Winner Of The 1937 Nobel Prize In Chemistry Karrer, Paul (submitted by Davis) Prof. Paul Karrer (submitted by Jackson) Paul Karrer brief CV (submitted by Erica) Paul Karrer – The Nobel Prize in Chemistry (submitted by Gregory) http://www.almaz.com/nobel/chemistry/1937b.html

P AUL K ARRER 1937 Nobel Laureate in Chemistry for his investigations on carotenoids, flavins and vitamins A and B2. Background Place of Birth: Moscow, Russia Residence: Switzerland Education: Zurich University Affiliation: Zurich University (Professor of organic chemistry, from 1919) Was the first to isolate vitamins A and K, and produced synthetically vitamins B2 and E Featured Internet Links Search WWW Search The Nobel Prize Internet Archive Links added by Nobel Internet Archive visitors Yahoo vitamin links Paul Karrer – Biography (submitted by Chinnappan Baskar About Paul Karrer (submitted by Thomas Karrer, Paul (submitted by Davis) Prof. Paul Karrer (submitted by Jackson) Paul Karrer brief CV (submitted by Erica) Paul Karrer – The Nobel Prize in Chemistry (submitted by Gregory) Paul Karrer – Biography (submitted by Tom) Paul Karrer Biography from Encyclopedia Britannica (submitted by www.britannica.com) Paul Karrer - Biography (submitted by Lukas) Back to The Nobel Prize Internet Archive Literature Peace Chemistry ... Medicine We always welcome your feedback and comments

31. McGraw-Hill's AccessScience The content above is only an excerpt. Please log in for full access. http://www.accessscience.com/content.aspx?searchStr=Vitamin&id=M0090599

32. Paul Karrer Definition Of Paul Karrer In The Free Online Encyclopedia. Karrer, Paul . Born Apr. 21, 1889, in Moscow. Swiss organic chemist and biochemist. Graduated from the University of Z rich in 1911. From 1912 to 1918 he conducted pharmacochemical http://encyclopedia2.thefreedictionary.com/Paul Karrer

33. Karrer - Definition Of Karrer At YourDictionary.com kaross; KARP; K rpathos; KARPEN; Karpov; KARQ; KARR Karrer; Karrer Paul; KarrHlth; karroo; karroo (idioms) karroos; Kars; KARS (abbreviation) Karsavina; KARSC http://www.yourdictionary.com/karrer

34. Julie Karrer, Banfii-Designs: - ZoomInfo Business Information Karrer, Paul SF Gate Karrer, Paul Internet Security AG Karrer, Paul EWI , Inc. Karrer, Paul Monterey County Herald http://www.zoominfo.com/people/Karrer_Julie_271015070.aspx

Last Update on 1/12/07 Banfii-Designs 12905 W. 138Th Street Overland Park, Kansas 66221 United States Julie Karrer Results found for this person at Intelius.com More results for Karrer Karrer, Karl-Heinz APL Apparatebau GmbH Karrer, Katy Aurelia Community School Karrer, Ken Austin Independent School District LBJ High School Karrer, Laura Karrer, Leah The Coral Reef Karrer, Lee Archdiocese of Omaha Karrer, Lisa Manhattan New Music Project Karrer, Lisa World Music Institute Karrer, Lisa Ursel Schlicht Karrer, Louann Maurice River Township View More >> People directory A B C D ... Subscribe PRO_SEP2010_RC001.b.1[02]

35. The Nobel Prize In Chemistry 1937 Nobelprize.org, The Official Web Site of the Nobel Prize http://nobelprize.org/nobel_prizes/chemistry/laureates/1937/

Home FAQ Press Contact Us ... Nobel Prize in Chemistry The Nobel Prize in Chemistry 1937 About the Nobel Prizes Facts and Lists Nobel Prize in Physics Nobel Prize in Chemistry ... Nobel Prize Award Ceremonies Sort and list Nobel Prizes and Nobel Laureates Create a List All Nobel Prizes Nobel Prize Awarded Organizations Women Nobel Laureates Nobel Laureates and Universities Prize category: Physics Chemistry Medicine Literature Peace Economics The Nobel Prize in Chemistry 1937 Norman Haworth, Paul Karrer The Nobel Prize in Chemistry 1937 Summary Presentation Speech Speed Read ... Documentary Walter Norman Haworth Paul Karrer The Nobel Prize in Chemistry 1937 was divided equally between Walter Norman Haworth "for his investigations on carbohydrates and vitamin C" and Paul Karrer "for his investigations on carotenoids, flavins and vitamins A and B2" TO CITE THIS PAGE: MLA style: "The Nobel Prize in Chemistry 1937". Nobelprize.org. 1 Nov 2010 http://nobelprize.org/nobel_prizes/chemistry/laureates/1937/ About Nobelprize.org Technical Support Home FAQ ... Contact Us

36. Karl-Heinz Karrer, Technical Manager, APL Apparatebau GmbH: - ZoomInfo Business Karrer, Paul SF Gate Karrer, Paul Internet Security AG Karrer, Paul EWI , Inc. Karrer, Paul Monterey County Herald http://www.zoominfo.com/people/Karrer_Karl-Heinz_338179658.aspx

Last Update on 7/27/10 APL Apparatebau GmbH APL Apparatebau is a supplier of innovative solutions in the field of heat exchangers. The industrial concern, which is owned by the Pletzer family and actively... Karl-Heinz Karrer Phone Email Local Address: Austria Results found for this person at Intelius.com More results for Karrer Karrer, Katy Aurelia Community School Karrer, Ken Austin Independent School District LBJ High School Karrer, Laura Karrer, Leah The Coral Reef Karrer, Lee Archdiocese of Omaha Karrer, Lisa Manhattan New Music Project Karrer, Lisa World Music Institute Karrer, Lisa Ursel Schlicht Karrer, Louann Maurice River Township Karrer, Louis FIA Card Services , N.A. View More >> People directory A B C D ... WHAT IS ZOOMINFO?

37. Carotenoids : Karrer, Paul, 1889-1971 : Free Download & Streaming : Internet Arc Includes bibliographical references View the book http://www.archive.org/details/carotenoids00karr

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38. Full Text Translator, Language Translation | Free Translations From Dictionary.c Free full text language translations at Translate.Reference.com. Free online translator and multilingual dictionary for over 50 foreign languages. http://translate.reference.com/translate?query=Karrer, Paul

39. Paul Karrer Biography | BookRags.com World of Chemistry on Paul Karrer. Paul Karrer's long and distinguished career in chemistry included the study of sugars and plant pigments , subjects that led him to the description http://www.bookrags.com/biography/paul-karrer-woc/

40. Paul Karrer Encyclopedia Topics | Reference.com Karrer, Paul, 18891971, Swiss organic chemist, Ph.D. Univ. of Z rich, 1911. From 1912 to 1918, Karrer was a chemist at the Georg Speyer Haus, Frankfurt-am-Main. http://www.reference.com/browse/Paul Karrer

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