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10.1007/s13312-022-2594-2 57 TillemansM
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[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%
* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 m filter before use.
The goal is not simply to make the vial cold
Every J3420 claim must be defensible at audit
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