25-hydroxy Vitamin D<sub>2</sub>-d<sub>6</sub>

25-hydroxy Vitamin D2-d6

CAT N°: 34853
Price:

1,603.00 1,362.55

25-hydroxy Vitamin D2-d6 is intended for use as an internal standard for the quantification of 25-hydroxy vitamin D2 (Item No. 12078) by GC- or LC-MS. 25-hydroxy Vitamin D2 is a metabolite of vitamin D2 (Item No. 11791).{57807} It is formed from vitamin D2 by the cytochrome P450 (CYP) isoforms CYP2R1 and CYP27A1, which have 25-hydroxylase activity, and is bound to vitamin D binding protein (DBP) and albumin in the liver, then secreted into the bloodstream.{60080} 25-hydroxy Vitamin D2 is transported to the kidney, where it is preferentially 24-hydroxylated by CYP24A1 to produce 24,25-dihydroxy vitamin D2.{60080} It can also be hydroxylated by CYP27B1 to produce 1,25-dihydroxy vitamin D2.{60080,57807} Serum levels of 25-hydroxy vitamin D2 have been used as a marker of vitamin D status.{57808}

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