Abstract
FURTHER steps towards the elucidation of the chemical structure of vitamin D (calciferol) are reported by Prof. I. M. Heilbron, K. M. Samant and F. S. Spring. They suggest a three-ring formula and indicate the probable position of the double bonds and of the hydroxyl group.
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Points from Foregoing Letters. Nature 135, 1078 (1935). https://doi.org/10.1038/1351078b0
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DOI: https://doi.org/10.1038/1351078b0