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Friedrich Wöhler

Friedrich Wöhler

Credit: Smithsonian Institution

Friedrich Wöhler (July 31, 1800 - September 23, 1882) was a German chemist, -known for his synthesis of urea, but also the first to isolate several of the elements. In 1828 Wöhler proved by his preparation of urea from inorganic materials that organic substances do not have to come from biological sources, disproving the doctrine of vitalism.