SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
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Aleksandr Mikhailovich Butlerov (1828-86), Russian chemist. Butlerov was born at Christopol near Kazan, Russia, and was educated at Kazan State University. His expertise was in structural chemistry. He was the first to incorporate double bonds into chemical structures and discovered the structure of hexamine. He described the formose reaction in which formaldehyde is changed into complex sugars like ribose - an essential step in the origin of life.
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