Formestane
Formestane (CAS 566-48-3), with the molecular formula C19H26O3 and a molecular weight of 302.41 g/mol, is a chemical compound recognised for its role as an aromatase inhibitor. It is primarily utilised in research settings, particularly within cancer research and cell biology, for its ability to modulate specific biological pathways. This compound is supplied as a solid for laboratory and investigational purposes by Tech Serve Solutions.
- IUPAC
- 4-Hydroxyandrost-4-ene-3,17-dione,CGP-32349

Aromatase Inhibition Research
Formestane is employed in research to study the effects of aromatase inhibition. This enzyme plays a crucial role in the production of oestrogens, and its inhibition is a target in various endocrine-related research areas.
Cancer Research Studies
As an aromatase inhibitor, Formestane is a valuable tool in cancer research, particularly for investigating hormone-dependent cancers. It aids in understanding cellular mechanisms and potential therapeutic pathways.
Cell Biology Investigations
In cell biology, Formestane can be used to explore cellular processes influenced by oestrogen levels. Its application helps researchers elucidate complex signalling pathways and cellular responses.
Analytical Standard
Formestane serves as an analytical standard in chromatographic and other analytical methods. Its defined purity is essential for accurate calibration and quantification in laboratory analysis.
| Molecular weight | 302.41 |
|---|---|
| Empirical formula | C19H26O3 |
| Form | solid |

Hazard statements
- H360May damage fertility or the unborn child
Precautionary statements
- P201Obtain special instructions before use
- P308IF exposed or concerned
| Protective equipment | Eyeshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 60 |
| Safety statements (S) | 36/37/39-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Gene Information | human ... CYP19A1(1588) |
|---|
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Formestane primarily used for?
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Formestane is primarily used in research settings, including cancer research and cell biology, for its function as an aromatase inhibitor. It also serves as an analytical standard.
What is the CAS number and formula for Formestane?
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The CAS number for Formestane is 566-48-3, and its empirical formula is C19H26O3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Formestane for research and laboratory use. The specific assay and purity are detailed in the product specifications and are not represented as USP, BP, or EP grade.
What are the main safety concerns when handling Formestane?
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Formestane carries a 'Danger' signal word (GHS08) with hazard statement H360, indicating it may damage fertility or the unborn child. Appropriate personal protective equipment, including eyeshields, gloves, and suitable respirators, must be used. Handle with extreme caution in a well-ventilated area and follow all precautionary statements (P201, P308 + P313).
How is Formestane packed and shipped?
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Formestane is typically supplied as a solid and is packaged according to industry standards for chemical reagents. TSS exports globally, adhering to all relevant shipping and customs regulations.
How can I request a sample or quote for Formestane?
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To request a sample or a detailed quote for Formestane, please contact our sales team through the TSS website or directly via email.
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