Talk:Alexander R. Todd

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sources for re-write; nobelprize.org, Nobel Prize Internet Archive, ox.ac.uk/aboutoxford/awardwinners/nobel.shtml, blanchflower.org/alumni/oxfnobel.html62.254.128.5 23:20, 26 Jun 2005 (UTC)

Alexander R. Todd and vitamin B12
Hi there, are there any references for an _immediate_ involvement of Alexander R. Todd in the isolation of vitamin B12 in 1948, and/or in the revelation of its structure in 1955?

1) In the English Wikipedia articles on Pernicious anemia and Vitamin B12 it is claimed that it was Alexander R. Todd who - simultaneously with the American Karl Foster - first isolated vitamin B12 in 1948, while most other available sources say that it wasn't Todd, but the British Lester Smith, who worked at the same time for Glaxo Laboratories.

2) In the article on Alexander R. Todd himself it is claimed that "In 1955 he elucidated the structure of vitamin B12", while most other available sources, including the English Wikipedia article on Vitamin B12, say that it wasn't Todd, but the British Dorothy Hodgkin, who achieved this, also in 1955.

So, can anybody explain these ambiguities? Or do they emerge from the fact that Todd is/was just more prominent? In order to get an answer fast, I post this query in discussion section of both articles. --Qniemiec (talk) 17:19, 11 July 2010 (UTC)