The story of Dorothy Hodgkin who discovered the molecular structure of B12
http://www.bbc.co.uk/programmes/b04lc3kj
The Science of Vitamin B12
Vitamin B12, also known as cobalamin, is a complex and essential nutrient that plays a vital role in keeping our bodies healthy. Because the chemical structure of B12 is incredibly complex, it is nearly impossible to create it “from scratch” in a chemistry lab at a scale that is useful or affordable.




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