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25-Hydroxyvitamin D2

25-Hydroxyvitamin D2 structure

CAS No.: 21343-40-8

Chemical Name:: 25-Hydroxyvitamin D2

Synonyms: Ercalcidiol;25-Hydroxyergocalciferol;25-Hydroxyvitamin D2 solution;(E,3S,6S)-6-[(1R,3aR,4E,7aS)-4-[(2Z)-2-[(5S)-5-hydroxy-2-methylidene-cyclohexylidene]ethylidene]-7a-methyl-2,3,3a,5,6,7-hexahydro-1H-inden-1-yl]-2,3-dimethyl-hept-4-en-2-ol;25(OH)VitD2;Ercalcidiol d6;25-hydroxy VD2;25-Hydroxycalc;25-OH-Vitamin D2;25-Hydroxyvitami

CBNumber:: CB9502507

Molecular Formula:: C28H44O2

Molecular Weight:: 412.65

MDL Number:: MFCD02683431

MOL File:: 21343-40-8.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-09-12 18:56:31

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25-Hydroxyvitamin D2 Properties

Melting point	45-51°C
Boiling point	542.3±38.0 °C(Predicted)
Density	1.02±0.1 g/cm3(Predicted)
Flash point	14℃
storage temp.	Keep in dark place,Sealed in dry,Store in freezer, under -20°C
solubility	Limited solubility, soluble in DMSO or ethanol
pka	14.74±0.20(Predicted)
form	White crystalline powder.
color	White to off-white
biological source	synthetic
BRN	4716773
Stability	Light Sensitive, Temperature Sensitive
InChIKey	KJKIIUAXZGLUND-ICCVIKJNSA-N
SMILES	[C@H]1(O)CCC(=C)/C(=C\C=C2/CCC[C@@]3(C)[C@@]/2([H])CC[C@@H]3[C@H](C)/C=C/[C@H](C)C(O)(C)C)/C1
CAS DataBase Reference	21343-40-8(CAS DataBase Reference)
FDA UNII	A288AR3C9H
UNSPSC Code	41116107
NACRES	NA.28

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS02,GHS07

Signal word

Danger

Hazard statements

H225-H319

Precautionary statements

P210-P305+P351+P338

PPE

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

Hazard Codes

T+,F

Risk Statements

24/25-26-48/25-11

Safety Statements

28-36/37-45-16-7

RIDADR

UN2811 6.1/PG 2

WGK Germany

8-10-19

Storage Class

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

Hazard Classifications

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

NFPA 704

	0
4		0

25-Hydroxyvitamin D2 price More Price(57)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	H-073	25-Hydroxyvitamin D2 solution 50?μg/mL in ethanol, ampule of 1?mL, certified reference material, Cerilliant?	21343-40-8	1mL	$204	2026-04-30	Buy
Sigma-Aldrich	17937	25-Hydroxyvitamin D2 ≥98.0% (HPLC)	21343-40-8	1mg	$817	2026-04-30	Buy
Sigma-Aldrich	740233	25-Hydroxyvitamin D₂ solution 5 μg/mL in ethanol, 98% (CP)		1 mL	$150	2025-07-31	Buy
Sigma-Aldrich	740225	25-Hydroxyvitamin D₂ solution 50 μg/mL in ethanol, 98% (CP)		1 mL	$258	2025-07-31	Buy
Sigma-Aldrich	740217	25-Hydroxyvitamin D₂ solution 100 μg/mL in ethanol, 98% (CP)		1 mL	$327.75	2025-07-31	Buy

Product number	Packaging	Price	Buy
H-073	1mL	$204	Buy
17937	1mg	$817	Buy
740233	1 mL	$150	Buy
740225	1 mL	$258	Buy
740217	1 mL	$327.75	Buy

25-Hydroxyvitamin D2 Chemical Properties, Uses, Production

Chemical Properties

Off-White Solid

Uses

25-Hydroxyvitamin D2 may be used as a certified reference material (CRM) for the determination of the analyte in biological samples by chromatography techniques.

Uses

25-Hydroxyvitamin D₂can be used as an analytical standard for the quantitative analysis of 25-Hydroxyvitamin D₂content in biological fluids via LC-MS/MS.

Uses

A metabolite of Vitamin D2 (V676040).

Definition

ChEBI: A hydroxycalciol that is vitamin D2 in which the hydrogen at position 25 has been replaced by a hydroxy group.

General Description

25-Hydroxyvitamin D₂(ergocalciferol or 25-hydroxycalciferol) is a metabolite of vitamin D found in the liver. It is one of the most common forms of vitamin D circulating in the body and plays an important role in determining vitamin D deficiency.

Biological Activity

Ergocalciferol (vitamin D2) is activated in vivo by hydroxylation to 25-hydroxyergocalciferol and 1α,25-dihydroxycalciferol. Activated Vitamin D2 molecules may be used in a wide range of studies to assess their effects on functions such as immune function and calcium homeostasis.

25-Hydroxyvitamin D2 Preparation Products And Raw materials

Raw materials

Vitamin D2

Preparation Products

(1R,3aR,7aR)-1-((2R,5S,E)-6-hydroxy-5,6-diMethylhept-3-en-2-yl)-7a-Methylhexahydro-1H-inden-4(2H)-one

25-Hydroxyvitamin D2 Suppliers

Global Suppliers ( 210)

Supplier	Tel	Email	Country	ProdList	Advantage
Hydragon Pharma Ltd	021-50215258	market@hypharma.com	China	320	58
Chembest Research Laboratories Limited	021-20908456	sales@BioChemBest.com	China	5996	61
SHANGHAI ZZBIO CO., LTD.	18019219489 18901678489	tech@zzbioco.com	China	12062	58
J & K SCIENTIFIC LTD.	18210857532 18210857532	jkinfo@jkchemical.com	China	96815	76
Chemvon Biotechnology Co., Ltd	021-50790412	info@chemvon.com	China	371	57
3B Pharmachem (Wuhan) International Co.,Ltd.	18930552037	3bsc@sina.com	China	15813	69
Pure Chemistry Scientific Inc.	001-857-928-2050 or 1-888-588-9418	sales@chemreagents.com	United States	10174	62
Chemsky（shanghai）International Co.,Ltd.	021-50135380	shchemsky@sina.com	China	32273	50
Shandong Xiya Chemical Co., Ltd	13355009207 13355009207	3007715519@qq.com	China	18722	57
China Langchem Inc.	0086-21-58956006		China	7798	57

Supplier	Advantage
Hydragon Pharma Ltd	58
Chembest Research Laboratories Limited	61
SHANGHAI ZZBIO CO., LTD.	58
J & K SCIENTIFIC LTD.	76
Chemvon Biotechnology Co., Ltd	57
3B Pharmachem (Wuhan) International Co.,Ltd.	69
Pure Chemistry Scientific Inc.	62
Chemsky（shanghai）International Co.,Ltd.	50
Shandong Xiya Chemical Co., Ltd	57
China Langchem Inc.	57

View Latest Price from 25-Hydroxyvitamin D2 manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2026-07-15	Ercalcidiol 21343-40-8	$97.00-555.00		99.62%	10g	TargetMol Chemicals Inc.
2026-03-20	25-HYDROXYVITAMIN D2 21343-40-8	$10.00	1KG	99%	10 mt	Hebei Chuanghai Biotechnology Co., Ltd
2023-02-17	25-Hydroxyvitamin D2 21343-40-8	$10.00	1kg	98%	10ton	Golden Pharma Co., Limited

Ercalcidiol
21343-40-8
$97.00-555.00
99.62%
TargetMol Chemicals Inc.

25-HYDROXYVITAMIN D2
21343-40-8
$10.00
99%
Hebei Chuanghai Biotechnology Co., Ltd

25-Hydroxyvitamin D2
21343-40-8
$10.00
98%
Golden Pharma Co., Limited

25-Hydroxyvitamin D2 Spectrum

25-HYDROXYVITAMIN D2(21343-40-8)¹HNMR

21343-40-8 (25-Hydroxyvitamin D2) Related Search:

25-Hydroxy VD2-D6 25-HydroxyvitaMin D2-[D3] Ferritin Vitamin D2 AURORA KA-6723

1(alpha) 25-Dihydroxyvitamin D2* 25-Hydroxyvitamin D2 Calcitriol-13C5

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25-Hydroxyvitamin D2 solution Ercalcidiol d6 25-Hydroxyvitamin D2, >=98% 25-HydroxyvitaMin D2 25-Hydroxyergocalciferol 4-methylene-3-[(2E)-2-[(1R,3aS,7aR)-octahydro-1-[(1R,2E,4S)-5-hydroxy-1,4,5-trimethyl-2-hexenyl]-7a-methyl-4H-inden-4-ylidene]ethylidene]-cyclohexanol 25-HYDROXYVITAMIN D2 >= 98.0% (HPLC& 25-hydroxycalciferol 25-hydroxyvitamind (5Z,7E,22E)-25-Hydroxy-9,10-secoergosta-5,7,10(19),22-tetren-3β-ol (5Z,7E,22E)-9,10-Secoergosta-5,7,10(19),22-tetrene-3β,25-diol 25-Hydroxyergocalciferol 25-Hydroxyvitamin D2 25-OH-Vitamin D2 3β,5Z,7E,22E)-9,10-secoergosta-5,7,10(19),22-tetraen-3,25-diol 25-Hydroxyvitamin-D2-[2H3] 25-HydroxyVitaminD2-[d6](98%,99Atom%D) 4-methylene-3-[(2E)-2-[(1R,3aS,7aR)-octahydro-1-[(1R,2E,4S)-5-hydroxy-1,4,5-trimethyl-2-hexenyl]-7a-methyl-4H-inden-4-ylidene]ethyliden 25(OH)VitD2 Ercalcidiol(25-hydroxy VitaMin D2) 25-HydroxyvitaMin D₂ (E,3S,6S)-6-[(1R,3aR,4E,7aS)-4-[(2Z)-2-[(5S)-5-hydroxy-2-methylidene-cyclohexylidene]ethylidene]-7a-methyl-2,3,3a,5,6,7-hexahydro-1H-inden-1-yl]-2,3-dimethyl-hept-4-en-2-ol 25-hydoxyergocalciferol 3-{2-[1-(5-Hydroxy-1,4,5-trimethyl-hex-2-enyl)-7a-methyl-octahydro-inden-4-ylidene]-ethylidene}-4-methylene-cyclohexanol ( 25-Hydroxyvitamin D2 ) 25-Hydroxycalciferol, 25-Hydroxyergocalciferol 25-Hydroxyergocalciferol, 25-Hydroxycalciferol 25-hydoxyergocalciferol,25-hydroxy VD2 25-Hydroxyvitamin D2 (95%) 25-Hydroxy-Ergocalciferol (25-(OH)-Vitamin D2) Cyclohexanol, 4-methylene-3-[(2E)-2-[(1R,3aS,7aR)-octahydro-1-[(1R,2E,4S)-5-hydroxy-1,4,5-trimethyl-2-hexenyl]-7a-methyl-4H-inden-4-ylidene]ethylidene]-, (1S,3Z)- 1α,25-OH Vitamin D2 25-Hydroxyvitamin D2Q: What is 25-Hydroxyvitamin D2 Q: What is the CAS Number of 25-Hydroxyvitamin D2 Q: What is the storage condition of 25-Hydroxyvitamin D2 (S,Z)-3-(2-((1R,3aS,7aR,E)-1-((2R,5S,E)-6-Hydroxy-5,6-dimethylhept-3-en-2-yl)-7a-methyloctahydro-4H-inden-4-ylidene)ethylidene)-4-methylenecyclohexan-1-ol Ergocalciferol Impurity 9 25-hydroxy VD2 25-Hydroxyvitamin D solution 25-Hydroxyvitamin D2-[13C5] in Ethanol 25-Hydroxyvitamin D2 in Ethanol 25-HydroxyvitaminD2-[13C3] in Ethanol Etoricoxib Impurity 65 Ercalcidiol, 10 mM in DMSO 25-Hydroxycalc 25 hydroxyvitamin D2/25 hydroxyergosterol 25-Hydroxyvitami Ercalcidiol (Standard) Ercalcidiol 21343-40-8 399-95-4 Metabolite&impurity Isolabel Chiral Reagents Intermediates & Fine Chemicals Pharmaceuticals APIs