17-Epiestriol
17-Epiestriol (CAS: 1228-72-4), with the molecular formula C18H24O3 and a molecular weight of 288.38 g/mol, is an off-white to yellow solid. This steroid hormone, also known as 16α,17α-estradiol, plays a role in biological processes related to estrogenic activity. It is primarily utilised as a research chemical in studies concerning cell biology, cell signalling, and hormonal regulation. TSS offers this compound for laboratory and research applications.
- IUPAC
- 1,3,5(10)-Estratriene-3,16α,17α-triol,16α-Hydroxy-17α-estradiol,3,16α,17α-Trihydroxy-1,3,5(10)-estratriene
- Synonyms
- 1,3,5(10)-Estratriene-3,16α,17α-triol16α-Hydroxy-17α-estradiol3,16α,17α-Trihydroxy-1,3,5(10)-estratriene

Endocrinology Research
17-Epiestriol is employed in research settings to investigate the mechanisms of steroid hormone action and their effects on cellular pathways. Its structural similarity to other estrogens makes it a valuable tool for comparative studies.
Cell Biology Studies
This compound serves as a research reagent in cell biology, enabling investigations into cellular responses to hormonal stimuli. It can be used to probe signalling cascades relevant to cell growth and differentiation.
Biochemical Assays
As a defined biochemical compound, 17-Epiestriol is utilised in various assays to understand receptor binding, enzyme activity, and metabolic pathways involving steroid hormones.
| Molecular weight | 288.38 |
|---|---|
| Empirical formula | C18H24O3 |
| Colour | off-white to yellow |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
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 17-Epiestriol used for?
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17-Epiestriol is used as a research chemical in studies related to endocrinology, cell biology, and cell signalling, particularly concerning estrogenic activity and steroid hormone mechanisms.
What is the CAS number and chemical formula for 17-Epiestriol?
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The CAS number for 17-Epiestriol is 1228-72-4, and its molecular formula is C18H24O3.
What grade and purity does Tech Serve Solutions supply for 17-Epiestriol?
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Tech Serve Solutions supplies 17-Epiestriol typically for research purposes. Please refer to the product's Certificate of Analysis for specific grade and purity details. TSS does not represent this product as USP, BP, or EP grade.
What are the safety and handling considerations for 17-Epiestriol?
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17-Epiestriol requires appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter should be used. The substance has a WGK Germany classification of 3, indicating a high hazard to water.
How is 17-Epiestriol packed and shipped by TSS?
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Tech Serve Solutions packs and ships 17-Epiestriol according to standard laboratory chemical handling protocols, ensuring compliance with relevant regulations for domestic and international export.
How can I request a sample or quote for 17-Epiestriol?
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To request a sample or a quote for 17-Epiestriol, please contact the TSS sales department through our website or direct contact information provided.
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