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739928

Sigma-Aldrich

3-epi-25-Hydroxyvitamin D3 solution

50 μg/mL in ethanol, 98% (CP)

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About This Item

Empirical Formula (Hill Notation):
C27H44O2
CAS Number:
73809-05-9
Molecular Weight:
400.64
EC Number:
200-578-6
MDL number:
MFCD11656130
UNSPSC Code:
12352200
PubChem Substance ID:
329765389
NACRES:
NA.24

Quality Level

200

assay

98% (CP)

form

solution

concentration

50 μg/mL in ethanol

technique(s)

mass spectrometry (MS): suitable

color

colorless

mp

-144.0 °C

application(s)

detection

storage temp.

−20°C

SMILES string

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

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

InChI key

JWUBBDSIWDLEOM-UEGFJKGBSA-N

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General description

3-epi-25-Hydroxyvitamin D3 (C3-epimer) is a metabolite of vitamin D3. It is an epimer of 25-hydroxyvitamin D3 which differs only at C-3 position wherein -OH group at C-3 carbon is in the α orientation rather than in the β orientation.

Application

This product may be used as an analytical standard.

Packaging

1 mL in ampule

Related product

Product No.
Description
Pricing

pictograms

FlameExclamation mark
GHS02,GHS07

signalword

Danger

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 2

Storage Class

3 - Flammable liquids

wgk_germany

WGK 1

flash_point_f

57.2 °F - closed cup

flash_point_c

14.0 °C - closed cup

Certificates of Analysis (COA)

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Overestimation of 25-hydroxyvitamin D3 by increased ionisation efficiency of 3-epi-25-hydroxyvitamin D3 in LC-MS/MS methods not separating both metabolites as determined by an LC-MS/MS method for separate quantification of 25-hydroxyvitamin D3, 3-epi-25-hydroxyvitamin D3 and 25-hydroxyvitamin D2 in human serum
van den Ouweland JMW, et al.
Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences, 967, 195-202 (2014)

Articles

LC/MS/MS Analysis of Vitamin D Metabolites on Ascentis® Express F5 (Monitored Ions)

The metabolic role and health implications of the various vitamin D isoforms are of current clinical interest. Therefore, it is important to have an analytical method that will resolve all of the known isoforms with necessary sensitivity and specificity

LC/MS/MS Analysis of Vitamin D Metabolites on Ascentis® Express F5

This application shows an Ascentis Express F5 provided rapid resolution of the isobaric vitamin D metabolites. MS detection provides the necessary secondary resolution.

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