Francis William Aston

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Francis William Aston was born on September1, 1877, he was a British chemist and physicist who won the 1922 Nobel Prize in Chemistry for his discovery, by means of his mass spectrograph, of isotopes, in a large number of non-radioactive elements, and for his enunciation of the whole number rule. He died November 20, 1945. 

Richard A. Lerner

Richard A. Lerner  was born 28 August 1938, he is an American research chemist. Best known for his work on catalytic antibodies. He served as President of The Scripps Research Institute (TSRI) until January 1, 2012

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Friedrich Wohler

Friedrich Wohler was born on 31 July 1800. H was a German chemist, best known for his synthesis of urea. He died on 23 September 1882.