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Gustav Ehrhart

Gustav Ehrhart
Born (1894-12-21)21 December 1894
Ludwigshafen, Germany
Died 11 December 1971(1971-12-11) (aged 76)
Mainz, Germany
Citizenship German
Nationality German
Fields Chemistry,
Organic chemistry
Institutions Hoechst AG
Alma mater University of Heidelberg
Known for Synthesis of methadone
(with Max Bockmühl)

Gustav Ehrhart (21 December 1894 – 11 December 1971) was a German chemist. He synthesized the first opioid analgesic, methadone, together with Max Bockmühl.

Ehrhart studied chemistry at the University of Heidelberg, with a focus on organic chemistry. His studies were interrupted by the First World War. He served as an artillery officer. After the war he resumed his studies and was awarded a doctorate degree in 1922. One of his professors was Theodor Curtius. Ehrhart received the Victor-Meyer Award for his dissertation. In 1923 he started working for Hoechst AG. Two years later he became the deputy of Max Bockmühl, the head of the pharmaceutical research laboratories of the company. In 1949, after the Second World War, Erhardt succeeded Bockmühl as the head of the entire pharmaceutical research division of Hoechst AG. In 1951 he became a deputy member of the Board, and two years later a regular member of Hoechst AG's Board of Directors. During his time on the Board of Hoechst AG and after his retirement in 1961 Ehrhart maintained a laboratory which he personally supervised.

Ehrhart was awarded honorary doctorate degrees by the universities of Graz, Mainz, Frankfurt, Stuttgart, and Gießen. In 1952 Ehrhart was awarded the Adolf von Baeyer Medal, and in 1970 he was awarded the Grand Merit Cross of the Federal Republic of Germany.


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