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17938

Sigma-Aldrich

25-Hydroxyvitamin D3 monohydrate

≥99.0% (HPLC)

Synonyme(s) :

25-Hydroxycholecalciferol

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About This Item

Formule empirique (notation de Hill):
C27H44O2 · H2O
Numéro CAS:
63283-36-3
Poids moléculaire :
418.65
Numéro Beilstein :
4270041
Numéro MDL:
MFCD00867077
Code UNSPSC :
12352205
eCl@ss :
34058003
ID de substance PubChem :
57647690
Nomenclature NACRES :
NA.79

Source biologique

synthetic

Niveau de qualité

200

Pureté

≥99.0% (HPLC)

Forme

powder or crystals

Couleur

white to off-white

Conditions d'expédition

dry ice

Température de stockage

−20°C

Chaîne SMILES 

[H][C@@]1(CC[C@@]2([H])C(\CCC[C@]12C)=C\C=C3\C[C@@H](O)CCC3=C)[C@H](C)CCCC(C)(C)O

InChI

1S/C27H44O2/c1-19-10-13-23(28)18-22(19)12-11-21-9-7-17-27(5)24(14-15-25(21)27)20(2)8-6-16-26(3,4)29/h11-12,20,23-25,28-29H,1,6-10,13-18H2,2-5H3/b21-11+,22-12-/t20-,23+,24-,25+,27-/m1/s1

Clé InChI

JWUBBDSIWDLEOM-DTOXIADCSA-N

Informations sur le gène

human ... VDR(7421)

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Actions biochimiques/physiologiques

Cholecalciferol is an inactive form of vitamin D3 which undergoes various levels of hydroxylation to form active vitamin D3 analogs. 1α-Hydroxyvitamin D3 (alfacalcidol) is a synthetic analog that is metabolized to 1,25-dihydroxycholecalciferol, the biologically active form of vitamin D3. Other analogues of cholecalciferol result from different hydroxylations. 25-dihydroxycholecalciferol is a the major circulating form of vitamin D3 and a physiological precursor of 1α,25-Dihydroxycholecalciferol. The conversion is catalyzed by 25-Hydroxyvitamin D3 1-α-hydroxylase (VD3 1A hydroxylase) also known ascytochrome p450 27B1 (CYP27B1).

Conditionnement

Bottomless glass bottle. Contents are inside inserted fused cone.

Produit(s) apparenté(s)

Réf. du produit
Description
Tarif

Pictogrammes

Skull and crossbonesHealth hazard
GHS06,GHS08

Mention d'avertissement

Danger

Mentions de danger

H301 + H311,H330,H372

Classification des risques

Acute Tox. 2 Inhalation - Acute Tox. 3 Dermal - Acute Tox. 3 Oral - STOT RE 1 Oral

Code de la classe de stockage

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

Certificats d'analyse (COA)

Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".

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(24R)-24,25-Dihydroxyvitamin D3 ≥98% (vitamin + pre-vitamin, HPLC)

Sigma-Aldrich

17943

(24R)-24,25-Dihydroxyvitamin D3

Matthew J Rowling et al.
The Journal of nutrition, 136(11), 2754-2759 (2006-10-24)
The major circulating form of vitamin D is 25-hydroxycholecalciferol [25(OH)D3], which is delivered to target tissues in complex with the serum vitamin D binding protein (DBP). We recently observed that mammary cells can metabolize 25(OH)D3 to 1,25-dihydroxycholecalciferol [1,25(OH)(2)D3], the vitamin
Carly M Kemmis et al.
The Journal of nutrition, 136(4), 887-892 (2006-03-22)
1alpha,25-dihydroxycholecalciferol [1alpha,25(OH)2D3], the active form of cholecalciferol, is a negative growth regulator of breast cancer cells. CYP27B1 is a cytochrome P450-containing hydroxylase expressed in kidney and other tissues that generates 1alpha,25(OH)2D3 from an inactive vitamin D precursor 25-hydroxycholecalciferol [25(OH)D3]. In
H F DeLuca
Biochemical Society transactions, 10(3), 147-158 (1982-06-01)
Cholecalciferol must be regarded as a pro-hormone rather than a vitamin, since it is normally produced in skin under the influence of ultraviolet light. Cholecalciferol must be metabolized in liver to 25-hydroxycholecalciferol and subsequently to 1,25-dihydroxycholecalciferol before it can act
Alberto Lo Gullo et al.
PloS one, 10(8), e0134602-e0134602 (2015-08-05)
Suboptimal vitamin D status was recently acknowledged as an independent predictor of cardiovascular diseases and all-cause mortality in several clinical settings, and its serum levels are commonly reduced in Rheumatoid Arthritis (RA). Patients affected by RA present accelerated atherosclerosis and
Peter Daley et al.
The Lancet. Infectious diseases, 15(5), 528-534 (2015-04-13)
Vitamin D has immunomodulatory effects that might aid clearance of mycobacterial infection. We aimed to assess whether vitamin D supplementation would reduce time to sputum culture conversion in patients with active tuberculosis. We did this randomised, double-blind, placebo-controlled, superiority trial
Afficher tous les articles scientifiques apparentés

Articles

Vitamin D and Prevention of Human Disease

Vitamin D2 (ergocalciferol) is naturally synthesized from ergosterol by invertebrates, fungi, and plants in response to ultraviolet B irradiation, while vitamin D3 synthesis (cholecalciferol) is uniquely initiated in the skin of vertebrates. During sun exposure, ultraviolet B photons are absorbed by 7-dehydrocholesterol, which is found within the plasma membranes of epidermal and dermal skin layers. This reaction yields an unstable derivative of 7-dehydrocholesterol, named precholecalcitrol, which rapidly rearranges to vitamin D3. Vitamin D binding protein (DBP) is a carrier protein responsible for drawing vitamin D3 from the plasma membrane into the dermal capillaries within the extracellular space.

Protocoles

Analysis of Vitamin D in Milk and Infant Formula using UHPLC/MS/MS per AOAC Method 2011.11

While quantitative analysis was performed for Vitamins D2 and D3, the samples were scanned for the presence of the 25-hydroxy metabolites.

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