Equilin-d4

Name: Equilin-d4
Brand: Vaqora Chemicals
SKU: VQ-037108

About Equilin-d4

Equilin-d4 is a stable isotope labelled analogue related to Equilin carrying the CAS registry number 285979-79-5. Its molecular formula is C18H20O2 and its molecular weight is 272.4 g/mol. Alternative names: Equilin-2,4,16,16-d4.

The product is provided as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

Its mass shift relative to the unlabelled analyte makes it a dependable internal standard for LC-MS/MS assays, improving accuracy in bioanalysis, therapeutic drug monitoring and method validation. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, Equilin-d4 is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

LC-MS/MS internal standard
Bioanalytical quantitation
Pharmacokinetic studies

Industries

Related to Equilin

View every impurity, metabolite and intermediate we list for Equilin.

Equilin impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Equilin-d4
Catalogue No.	VQ-037108
CAS Number	285979-79-5
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 formula	C₁₈H₂₀O₂
Molecular weight	272.4 g/mol
Exact mass	272.1714
Grade	Reference Standard
HSN code	38229090
InChIKey	WKRLQDKEXYKHJB-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 CID	71311464

Physical properties
Physical form	Solid
LogP (XLogP3)	2.9
H-bond donors / acceptors	1 / 2
TPSA	37.3 Å²

Safety & hazard information (GHS)

Health hazard

Signal word: Warning

Hazard statements

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

Precautionary statements: P203, P280, P318, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Equilin-d4?

The CAS Registry Number of Equilin-d4 is 285979-79-5. It is also known 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-.

What is the molecular formula and molecular weight of Equilin-d4?

Equilin-d4 has the molecular formula C18H20O2 and a molecular weight of 272.4 g/mol. Its 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.

What is Equilin-d4 used for?

Equilin-d4 is supplied as a characterised reference material related to Equilin. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Equilin-d4 can I order?

We supply Equilin-d4 in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Equilin-d4?

Yes. Every lot of Equilin-d4 is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Equilin-d4 be shipped internationally?

Yes. Equilin-d4 is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.