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Stable Isotope Labelled Standards (Deuterated, 13C, 15N)

Equilin-d4

Reference StandardAvailable on request

Order Equilin-d4 (CAS 285979-79-5) online at Zemixal. Lab and bulk packs, batch COA, fast global delivery. Catalogue no. ZX-033427.

Pack sizes
Equilin-d4 chemical structure
CAS number285979-79-5
FormulaC18H20O2
Molar mass272.4 g/mol
Physical formSolid
HS code38229090
InChIKeyWKRLQDKEXYKHJB-DLIXUXMWSA-N
IUPAC name(9S,13S,14S)-2,4,16,16-tetradeuterio-3-hydroxy-13-methyl-6,9,11,12,14,15-hexahydrocyclopenta[a]phenanthren-17-one

About Equilin-d4

Analytical teams working on Equilin use Equilin-d4 as a qualified comparison standard. Key data (Reference Standard): CAS 285979-79-5, formula C18H20O2 and molar mass 272.4 g/mol. It is handled as a solid.

Where it is used

  • LC-MS/MS internal standard
  • Bioanalytical quantitation
  • Pharmacokinetic studies

Handling and storage

Classified under GHS with signal word Warning and hazard statements H351 and H361. Read the SDS before first use.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and custom quantities are quoted on request. 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 Equilin

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

Equilin standards

Typical uses

  • LC-MS/MS internal standard
  • Bioanalytical quantitation
  • Pharmacokinetic studies

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Deuterated and Stable-Isotope-Labelled Compounds

Specifications and identifiers

Specifications of Equilin-d4
Product nameEquilin-d4
Catalogue numberZX-033427
CAS number285979-79-5
IUPAC name(9S,13S,14S)-2,4,16,16-tetradeuterio-3-hydroxy-13-methyl-6,9,11,12,14,15-hexahydrocyclopenta[a]phenanthren-17-one
Molecular formulaC18H20O2
Molar mass272.4 g/mol
Exact mass272.1714
GradeReference Standard
Physical formSolid
XLogP32.9
H-bond donors / acceptors1 / 2
Topological polar surface area37.3 Ų
HS code38229090
InChIKeyWKRLQDKEXYKHJB-DLIXUXMWSA-N
SMILES[2H]C1=CC2=C(CC=C3[C@@H]2CC[C@]4([C@H]3CC(C4=O)([2H])[2H])C)C(=C1O)[2H]
PubChem CID71311464
Synonyms3-Hydroxy(2,4,16,16-~2~H_4_)estra-1,3,5(10),7-tetraen-17-one, Equilin-2,4,16,16-d4, Estra-1,3,5(10),7-tetraen-17-one-2,4,16,16-d4, 3-hydroxy-

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

Safety and GHS hazards

GHS08 Health hazard
Health hazard

Signal word Warning

  • H351Suspected of causing cancer
  • H361Suspected of damaging fertility or the unborn child

Precautionary statements P203, P280, P318, 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 Equilin-d4
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 Equilin-d4

Which CAS number identifies Equilin-d4?
Equilin-d4 is registered under CAS 285979-79-5. You may also see it listed as 3-Hydroxy(2,4,16,16-~2~H_4_)estra-1,3,5(10),7-tetraen-17-one, Equilin-2,4,16,16-d4, Estra-1,3,5(10),7-tetraen-17-one-2,4,16,16-d4, 3-hydroxy-. Our catalogue number for this item is ZX-033427.
What are the formula and molar mass of Equilin-d4?
For Equilin-d4, its formula is C18H20O2 and its molar mass is 272.4 g/mol. The systematic (IUPAC) name is (9S,13S,14S)-2,4,16,16-tetradeuterio-3-hydroxy-13-methyl-6,9,11,12,14,15-hexahydrocyclopenta[a]phenanthren-17-one. InChIKey WKRLQDKEXYKHJB-DLIXUXMWSA-N lets you match it in any structure database.
How is Equilin-d4 used in pharmaceutical QC?
Equilin-d4 is a characterised reference material linked to Equilin. 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 Equilin-d4?
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 Equilin-d4?
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 Equilin-d4 to my country?
Yes. Because Equilin-d4 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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