Talk:Dihydrotachysterol

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same thing as vitamin d4 ?[edit]

Is Dihydrotachysterol the same thing as vitamin d4 (22-Dihydroergocalciferol)? ChemSpider says they are the same [1] If so, we should merge the articles. Jatlas (talk) 01:47, 18 August 2012 (UTC)[reply]