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Y.QuM.DuanR.ShiD.JinL.GaoJ.et al (2019)
[73] As noted above, the completely synthetic laboratory synthesis of B 12 was achieved by Robert Burns Woodward and Albert Eschenmoser in 1972, though this process has no commercial potential, requiring more than 70 steps and having a yield well below 0.01%
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Higher dilution volumes result in lower concentration solutions, while lower dilution volumes produce higher concentrations
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