Conjugated Estrogens

About Conjugated Estrogens

Conjugated Estrogens is a high-purity reference standard of Conjugated estrogens carrying the CAS registry number 12126-59-9. With the molecular formula C18H21NaO5S, it has a molar mass of 372.4 g/mol. The IUPAC name is sodium [(13S)-13-methyl-17-oxo-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-3-yl] sulfate. Alternative names: Oestro Feminal and Estro Feminal.

It is supplied as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Good laboratory practice and suitable PPE are recommended during handling.

Laboratories use this Conjugated estrogens standard for identity and assay testing, system suitability checks and method validation supporting ANDA and DMF filings. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

We offer Conjugated Estrogens in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Identification & assay
Method development & validation
QC reference material

Industries

Related to Conjugated estrogens

View every impurity, metabolite and intermediate we list for Conjugated estrogens.

Conjugated estrogens impurities

Specifications & identifiers

Chemical identifiers
Product name	Conjugated Estrogens
Catalogue No.	VQ-037098
CAS Number	12126-59-9
IUPAC name	sodium [(13S)-13-methyl-17-oxo-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-3-yl] sulfate
Molecular formula	C₁₈H₂₁NaO₅S
Molecular weight	372.4 g/mol
Exact mass	372.1007
Grade	Reference Standard
HSN code	38229090
InChIKey	VUCAHVBMSFIGAI-TWCWWGPMSA-M
SMILES	C[C@]12CCC3C(C1CCC2=O)CCC4=C3C=CC(=C4)OS(=O)(=O)[O-].[Na+]
PubChem CID	45357473

Physical properties
Physical form	Solid
H-bond donors / acceptors	0 / 5
TPSA	91.9 Å²
Synonyms	Oestro Feminal, Estro Feminal, Estro-Feminal, Estrogen, Conjugated, Equine Estrogen, Conjugated, Estrogen, Conjugated Equine, Equine Estrogens, Conjugated, Sodestrin, Premarin Cream, Conjugated Estrogenic Substances, Premarin Vaginal, Estrogens,conjugated

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 Conjugated Estrogens?

The CAS Registry Number of Conjugated Estrogens is 12126-59-9. It is also known as Oestro Feminal, Estro Feminal, Estro-Feminal.

What is the molecular formula and molecular weight of Conjugated Estrogens?

Conjugated Estrogens has the molecular formula C18H21NaO5S and a molecular weight of 372.4 g/mol. Its IUPAC name is sodium [(13S)-13-methyl-17-oxo-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-3-yl] sulfate.

What is Conjugated Estrogens used for?

Conjugated Estrogens is supplied as a characterised reference material related to Conjugated estrogens. 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 Conjugated Estrogens can I order?

We supply Conjugated Estrogens 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 Conjugated Estrogens?

Yes. Every lot of Conjugated Estrogens 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 Conjugated Estrogens be shipped internationally?

Yes. We export Conjugated Estrogens worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.