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vitamina-d3-100-mui-polvo

VITAMINA D3 100 MUI POLVO

Cholecalciferol (/ˌkoʊləkælˈsɪfərɒl/) (vitamin D3) is one of the five forms of vitamin D.[1][2] It is a secosteroid, that is, a steroid molecule with one ring open. This and all forms of vitamin D are misnamed: vitamins by definition are essential organic compounds which cannot be synthesized by the body and must be ingested; cholecalciferol is synthesized by the body, and functions as a prehormone. Cholecalciferol is inactive: it is converted to its active form by two hydroxylations: the first in the liver, the second in the kidney, to form calcitriol, whose action is mediated by the vitamin D receptor, a nuclear receptor which regulates the synthesis of hundreds of enzymes and is present in virtually every cell in the body.

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Product Description


IUPAC names

(3β,5Z,7E)-9,10-secocholesta-
5,7,10(19)-trien-3-ol
Other names

vitamin D3, activated 7-dehydrocholesterol

CAS Number
67-97-0 =
ChEBI CHEBI:28940
ChEMBL ChEMBL1042
ChemSpider 4444353
DrugBank DB00169
EC Number 200-673-2
Jmol interactive 3D Image
PubChem 5280795
UNII 1C6V77QF41
InChI[show]
SMILES[show]

Chemical formula
C27H44O
Molar mass 384.64 g/mol
Appearance White, needle-like crystals
Melting point 83 to 86 °C (181 to 187 °F; 356 to 359 K)
Boiling point 496.4 °C (925.5 °F; 769.5 K)
Solubility in water
Practically insoluble in water, freely soluble in Abs. Ethanol, Methanol and some other organic solvents. Slightly soluble in vegetable oils.

ATC code A11CC05

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