GARY BROWN / SCIENCE PHOTO LIBRARY GARY BROWN / SCIENCE PHOTO LIBRARY
Caricature of the German organic chemist Emil Fischer (1852-1919). Fischer discovered phenylhydrazine, and worked on sugars, dyes, purines and indoles. He was professor at Wurzburg and then at Berlin University. He did outstanding work on carbohydrates, glycosides, tannins, peptides and proteins, compounds which are fundamental to biochemistry; he won the Nobel Prize for chemistry in 1902. Later, he worked out the general principles for structure and synthesis of polypeptides. Sadly he killed himself in 1919.
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