Problems relating to the definition of an international unit for vitamin D and its metabolites
Norman, A.W.
Journal of Nutrition 102(10): 1243-1246
1972
ISSN/ISBN: 0022-3166 PMID: 4342292 Document Number: 54857
It is proposed that the present definition of 1.0 International Unit of vitamin D be applied only to 0.025 mu g (65.0 pmoles) of cholecalciferol. The molar equivalents of other forms of the vitamin are tabulated.
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