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August Folkers (Figure In 1948, the two groups independently and simultaneously reported the isolation of vitamin B12 Most of Folkers' work was carried out while working at the Merck Company (later Merck Sharp & Dohme) from 1934 to 1963. His laboratory at Merck was known for isolation, purification, synthesis, and structural determination of many bioactive natural products They also were the first to describe the synthesis
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Bjørklund et al. (2017) studied this question.
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