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API Impurities

25-Hydroxyvitamin D2

Reference StandardAvailable on request

Order 25-Hydroxyvitamin D2 (CAS 21343-40-8) online at Zemixal. Lab and bulk packs, batch COA, fast global delivery. Part of our API Impurities range.

Pack sizes
25-Hydroxyvitamin D2 chemical structure
CAS number21343-40-8
FormulaC28H44O2
Molar mass412.6 g/mol
Physical formSolid
HS code38229090
InChIKeyKJKIIUAXZGLUND-ICCVIKJNSA-N
IUPAC name(1S,3Z)-3-[(2E)-2-[(1R,3aS,7aR)-1-[(E,2R,5S)-6-hydroxy-5,6-dimethylhept-3-en-2-yl]-7a-methyl-2,3,3a,5,6,7-hexahydro-1H-inden-4-ylidene]ethylidene]-4-methylidenecyclohexan-1-ol

About 25-Hydroxyvitamin D2

25-Hydroxyvitamin D2 is supplied by Zemixal as a characterised reference material for Ergocalciferol analysis. Identity at a glance (Reference Standard): CAS 21343-40-8, formula C28H44O2 and molar mass 412.6 g/mol. It is handled as a solid.

Common uses in the lab and plant

  • Analytical method development
  • Method validation (AMV)
  • QC release testing
  • ANDA / DMF filings

Handling and storage

Classified under GHS with signal word Danger and hazard statements H301+H311, H301, H311 and H330. Read the SDS before first use.

Order it in 10 mg, 25 mg, 50 mg and 100 mg packs or ask for a bulk quotation. You receive a certificate of analysis with characterisation data with each order. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Ergocalciferol

See every impurity, metabolite and related compound we list for this API.

Ergocalciferol standards

Typical uses

  • Analytical method development
  • Method validation (AMV)
  • QC release testing
  • ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Deuterated and Stable-Isotope-Labelled Compounds

Specifications and identifiers

Specifications of 25-Hydroxyvitamin D2
Product name25-Hydroxyvitamin D2
Catalogue numberZX-033406
CAS number21343-40-8
IUPAC name(1S,3Z)-3-[(2E)-2-[(1R,3aS,7aR)-1-[(E,2R,5S)-6-hydroxy-5,6-dimethylhept-3-en-2-yl]-7a-methyl-2,3,3a,5,6,7-hexahydro-1H-inden-4-ylidene]ethylidene]-4-methylidenecyclohexan-1-ol
Molecular formulaC28H44O2
Molar mass412.6 g/mol
Exact mass412.3341
GradeReference Standard
Physical formSolid
XLogP36
H-bond donors / acceptors2 / 2
Topological polar surface area40.5 Ų
HS code38229090
InChIKeyKJKIIUAXZGLUND-ICCVIKJNSA-N
SMILESC[C@H](/C=C/[C@H](C)C(C)(C)O)[C@H]1CC[C@@H]\2[C@@]1(CCC/C2=C\C=C/3\C[C@H](CCC3=C)O)C
PubChem CID5710148
Synonyms25-Hydroxycalciferol, 25-Hydroxyergocalciferol, 9,10-Secoergosta-5,7,10(19),22-tetraene-3,25-diol, (3beta,5Z,7E,22E)-, 9,10-Secoergosta-5,7,10(19),22-tetraene-3 beta,25-diol, Ercalcidiol, 25-hydroxyergocalciferol-

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS06 Acute toxicity
Acute toxicity
GHS08 Health hazard
Health hazard

Signal word Danger

  • H301+H311Toxic if swallowed or in contact with skin
  • H301Toxic if swallowed
  • H311Toxic in contact with skin
  • H330Fatal if inhaled
  • H372Causes damage to organs through prolonged or repeated exposure

Precautionary statements P260, P262, P264, P270, P271, P280, P284, P301 + P316, P302 + P352, P304 + P340, P316, P319, P320, P321, P330, P361 + P364, P403 + P233, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of 25-Hydroxyvitamin D2
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about 25-Hydroxyvitamin D2

Which CAS number identifies 25-Hydroxyvitamin D2?
25-Hydroxyvitamin D2 is registered under CAS 21343-40-8. You may also see it listed as 25-Hydroxycalciferol, 25-Hydroxyergocalciferol, 9,10-Secoergosta-5,7,10(19),22-tetraene-3,25-diol, (3beta,5Z,7E,22E)-. Our catalogue number for this item is ZX-033406.
What are the formula and molar mass of 25-Hydroxyvitamin D2?
For 25-Hydroxyvitamin D2, its formula is C28H44O2 and its molar mass is 412.6 g/mol. InChIKey KJKIIUAXZGLUND-ICCVIKJNSA-N lets you match it in any structure database.
How is 25-Hydroxyvitamin D2 used in pharmaceutical QC?
25-Hydroxyvitamin D2 is a characterised reference material linked to Ergocalciferol. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for 25-Hydroxyvitamin D2?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with 25-Hydroxyvitamin D2?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship 25-Hydroxyvitamin D2 to my country?
Yes. Because 25-Hydroxyvitamin D2 is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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