Formestane

Name: Formestane
Brand: Vaqora Chemicals
SKU: VQ-037408

About Formestane

Listed under CAS 566-48-3, Formestane is an API reference standard available from Vaqora Chemicals. With the molecular formula C19H26O3, it has a molar mass of 302.4 g/mol. Alternative names: 4-Hydroxyandrost-4-ene-3,17-dione and 4-Hydroxyandrostenedione.

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 “Danger”, 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.

We offer Formestane 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

Specifications & identifiers

Chemical identifiers
Product name	Formestane
Catalogue No.	VQ-037408
CAS Number	566-48-3
IUPAC name	(8R,9S,10R,13S,14S)-4-hydroxy-10,13-dimethyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthrene-3,17-dione
Molecular formula	C₁₉H₂₆O₃
Molecular weight	302.4 g/mol
Exact mass	302.1882
Grade	Reference Standard
HSN code	38229090
InChIKey	OSVMTWJCGUFAOD-KZQROQTASA-N
SMILES	C[C@]12CCC(=O)C(=C1CC[C@@H]3[C@@H]2CC[C@]4([C@H]3CCC4=O)C)O
PubChem CID	11273

Physical properties
Physical form	Solid
LogP (XLogP3)	2.6
H-bond donors / acceptors	1 / 3
TPSA	54.4 Å²
Synonyms	4-Hydroxyandrost-4-ene-3,17-dione, 4-Hydroxyandrostenedione, 4-OH-A, 4-Hydroxy-4-androstene-3,17-dione, 4-OHA, 4-OHAD, 4-oh-androstene-3,17-dione, 4-hydroxy-Delta(4)-androstenedione, 4-hydroxyandrostene-3,17-dione, B, Aromatase inhibitor, 4-Hydroxy-delta(sub 4)-androstenedione

Safety & hazard information (GHS)

Health hazard

Signal word: Danger

Hazard statements

H360May damage 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 Formestane?

The CAS Registry Number of Formestane is 566-48-3. It is also known as 4-Hydroxyandrost-4-ene-3,17-dione, 4-Hydroxyandrostenedione, 4-OH-A.

What is the molecular formula and molecular weight of Formestane?

Formestane has the molecular formula C19H26O3 and a molecular weight of 302.4 g/mol. Its IUPAC name is (8R,9S,10R,13S,14S)-4-hydroxy-10,13-dimethyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthrene-3,17-dione.

Which grade and pack sizes of Formestane can I order?

We supply Formestane 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 Formestane?

Yes. Every lot of Formestane 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 Formestane be shipped internationally?

Yes. Formestane 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.