Coumestrol

Name: Coumestrol
Brand: Vaqora Chemicals
SKU: VQ-047873

About Coumestrol

Coumestrol (CAS 479-13-0) is an API reference standard offered by Vaqora Chemicals. Formula C15H8O5, molecular weight 268.22 g/mol. Systematically, it is named 3,9-dihydroxy-[1]benzofuro[3,2-c]chromen-6-one. Common synonyms include Cumoestrol and Cumostrol.

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. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

As a reference sample of the parent drug substance, it is used for identification, assay and impurity-profiling work during analytical method development, validation (AMV) and routine QC. It is used across pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies Coumestrol in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Identification & assay
Method development & validation
QC reference material

Industries

Specifications & identifiers

Chemical identifiers
Product name	Coumestrol
Catalogue No.	VQ-047873
CAS Number	479-13-0
IUPAC name	3,9-dihydroxy-[1]benzofuro[3,2-c]chromen-6-one
Molecular formula	C₁₅H₈O₅
Molecular weight	268.22 g/mol
Exact mass	268.0372
Grade	Reference Standard
HSN code	38229090
InChIKey	ZZIALNLLNHEQPJ-UHFFFAOYSA-N
SMILES	C1=CC2=C(C=C1O)OC3=C2C(=O)OC4=C3C=CC(=C4)O
PubChem CID	5281707

Physical properties
Physical form	Solid
LogP (XLogP3)	2.8
H-bond donors / acceptors	2 / 5
TPSA	79.9 Å²
Synonyms	Cumoestrol, Cumostrol, 3,9-Dihydroxycoumestan, 3,9-Dihydroxy-6H-benzofuro(3,2-c)(1)benzopyran-6-one, 6H-Benzofuro[3,2-c][1]benzopyran-6-one, 3,9-dihydroxy-, 6H-Benzofuro(3,2-c)(1)benzopyran-6-one, 3,9-dihydroxy-, 3,9-dihydroxy-(1)benzofuro(3,2-c)chromen-6-one, Cumoesterol, 3,9-Dihydroxy-6H-[1]benzofuro[3,2-c]chromen-6-one, Cumestrol, 3,9-dihydroxy-6H-benzofuro[3,2-c]chromen-6-one, 3,9-dihydroxybenzofuro[3,2-c]chromen-6-one

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P403 + P233, 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 Coumestrol?

The CAS Registry Number of Coumestrol is 479-13-0. It is also known as Cumoestrol, Cumostrol, 3,9-Dihydroxycoumestan.

What is the molecular formula and molecular weight of Coumestrol?

Coumestrol has the molecular formula C15H8O5 and a molecular weight of 268.22 g/mol. Its IUPAC name is 3,9-dihydroxy-[1]benzofuro[3,2-c]chromen-6-one.

Which grade and pack sizes of Coumestrol can I order?

We supply Coumestrol 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 Coumestrol?

Yes. Every lot of Coumestrol 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 Coumestrol be shipped internationally?

Yes. Coumestrol 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.