Skip to Content
Merck
All Photos(1)

Documents

17946

Sigma-Aldrich

1α-Hydroxyvitamin D3

≥97.0% (HPLC)

Synonym(s):

1α-Hydroxycholecalciferol, Alfacalcidol

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Empirical Formula (Hill Notation):
C27H44O2
CAS Number:
41294-56-8
Molecular Weight:
400.64
EC Number:
255-297-1
MDL number:
MFCD00868328
UNSPSC Code:
12352205
PubChem Substance ID:
57647693
NACRES:
NA.79

biological source

synthetic

Assay

≥97.0% (HPLC)

form

powder or crystals

color

white to off-white

storage temp.

−20°C

SMILES string

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

InChI

1S/C27H44O2/c1-18(2)8-6-9-19(3)24-13-14-25-21(10-7-15-27(24,25)5)11-12-22-16-23(28)17-26(29)20(22)4/h11-12,18-19,23-26,28-29H,4,6-10,13-17H2,1-3,5H3/b21-11+,22-12-/t19-,23-,24-,25+,26+,27-/m1/s1

InChI key

OFHCOWSQAMBJIW-AVJTYSNKSA-N

Gene Information

human ... VDR(7421)

Looking for similar products? Visit Product Comparison Guide

General description

1α-Hydroxyvitamin D3, also known as alfacalcidol, is a synthetic vitamin D3 analogue, hydroxylated in position one. It is metabolized to 1,25-dihydroxycholecalciferol by 25-hydroxylases.

Biochem/physiol Actions

1α-Hydroxyvitamin D3 facilitates calcium absorption and deposition. It also has an ability to inhibit bone resorption and stimulate bone formation. Alfacalcidol is used for treating various bone diseases such as rickets/osteomalacia, renal osteodystrophy and osteoporosis. It acts as a chemopreventive agent and reduces the risk colitis and carcinogenesis.
Synthetic vitamin D3 analog that is metabolized to 1,25-dihydroxycholecalciferol. Inhibits bone resorption and stimulates bone formation. Supresses parathyroid hormone secretion by bovine parathyroid cells.

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

related product

Product No.
Description
Pricing

Pictograms

Skull and crossbones
GHS06

Signal Word

Danger

Hazard Statements

H300

Precautionary Statements

P301 + P330 + P331 + P310

Hazard Classifications

Acute Tox. 1 Oral

Storage Class Code

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

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

The advantage of alfacalcidol over vitamin D in the treatment of osteoporosis
Shiraishi A, et al.
Calcified Tissue International, 65(4), 311-316 (1999)
Eva Zold et al.
Autoimmunity reviews, 10(3), 155-162 (2010-09-28)
Vitamin D deficiency may contribute to pathological changes in the number and function of CD4+ T helper cell subsets (CD4+Th1, CD4+Th17, CD4+CD25(bright)Foxp3-natural regulatory T cells-nTreg) in patients with undifferentiated connective tissue disease (UCTD). The aim of the present study was
Chemopreventive effect of a vitamin D3 analog, alfacalcidol, on colorectal carcinogenesis in mice with ulcerative colitis
Kikuchi H, et al.
Anti-Cancer Drugs, 18(10), 1183-1187 (2007)
Alfacalcidol inhibits bone resorption and stimulates formation in an ovariectomized rat model of osteoporosis: distinct actions from estrogen
Shiraishi A, et al.
Journal of Bone and Mineral Research, 15(4), 770-779 (2000)
Hajime Orimo et al.
Current medical research and opinion, 27(6), 1273-1284 (2011-05-11)
The authors conducted a randomized controlled trial to clarify the efficacy and safety of alendronate plus alfacalcidol versus alendronate alone in a clinical setting. Eligible patients were postmenopausal women with severe osteoporosis who were aged 70 years or older and
View All Related Papers

Articles

Method Optimization for LC-MS Analysis of Vitamin D Metabolite Critical Pairs in Serum

Novel sample prep technique coupled with the unique selectivity of the Ascentis Express F5 column enables a fast and simplified bioanalytical method for associated vitamin D metabolites.

Method Optimization for LC-MS Analysis of Vitamin D Metabolite Critical Pairs in Serum

Using HybridSPE-Phospholipid, Ascentis Express, and Other LC-MS Workflow Components

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service