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  • Title: 23,24,25-Trihydroxyvitamin D3, 24,25,26-trihydroxyvitamin D3, 24-keto-25-hydroxyvitamin D3, and 23-dehydro-25-hydroxyvitamin D3: new in vivo metabolites of vitamin D3.
    Author: Wichmann JK, Schnoes HK, DeLuca HF.
    Journal: Biochemistry; 1981 Dec 22; 20(26):7385-91. PubMed ID: 6275880.
    Abstract:
    Four new in vivo metabolites of vitamin D3 were isolated from the blood plasma of chicks given large doses of vitamin D3. The metabolites were isolated by methanol-chloroform extraction and a series of chromatographic procedures. By use of mass spectrometry, ultraviolet absorption spectrophotometry, and specific chemical reactions, the metabolites were identified as 23,24,25-trihydroxyvitamin D3, 24,25,26-trihydroxyvitamin D3, 24-keto-25-hydroxyvitamin D3 and 23-dehydro-25-hydroxyvitamin D3.
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