Mestranol
Mestranol (CAS 72-33-3; C21H26O2) is a synthetic estrogen derivative with a molecular weight of 310.43 g/mol. It functions as a pharmacological estrogen molecule. This compound is primarily utilised in chemical synthesis and as a chiral building block in complex molecule construction. Supplied by Tech Serve Solutions with an assay of 99%.
- IUPAC
- 17α-Ethynyl-1,3,5(10)-estratriene-3,17β-diol 3-methyl ether,17α-Ethynylestradiol 3-methyl ether,3-Methoxy-17α-ethynylestradiol,NSC 84032
- Synonyms
- 17α-Ethynyl-1,3,5(10)-estratriene-3,17β-diol 3-methyl ether17α-Ethynylestradiol 3-methyl ether3-Methoxy-17α-ethynylestradiolNSC 84032

Pharmacological Estrogen
Mestranol acts as a synthetic estrogen, exhibiting pharmacological activity. Its structure allows for its use in applications requiring estrogenic effects.
Chemical Synthesis
As a versatile chemical compound, Mestranol is employed in various synthetic pathways. It serves as a valuable intermediate for the creation of more complex molecules.
Chiral Building Block
The molecule's chiral nature makes it a useful chiral building block in asymmetric synthesis. It contributes to the stereospecific construction of targeted compounds.
| Molecular weight | 310.43 |
|---|---|
| Empirical formula | C21H26O2 |
| Assay | 99% |
| Optical activity | [α]15/D +3°, c = 2 in dioxane |
| Application | Pharmacological estrogen molecule1,2,3 |
| Melting point | 153-155 °C(lit.) |


Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H351Suspected of causing cancer
Precautionary statements
- P281Use personal protective equipment as required
- P305IF IN EYES
| 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) | Xn |
| Risk statements (R) | 40-68 |
| Safety statements (S) | 36/37 |
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 Mestranol used for?
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Mestranol functions as a pharmacological estrogen molecule and is used in chemical synthesis and as a chiral building block for complex molecules.
What are the CAS number and formula for Mestranol?
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The CAS number for Mestranol is 72-33-3, and its empirical formula (Hill notation) is C21H26O2.
What grade and purity does Tech Serve Solutions supply for Mestranol?
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Tech Serve Solutions supplies Mestranol with a purity of 99% (assay). We do not represent this product as USP, BP, EP, or any other pharmacopoeial grade unless explicitly stated in the product specifications.
How should Mestranol be handled safely?
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Mestranol is classified with Warning signal word and hazards H315 (Causes skin irritation), H319 (Causes serious eye irritation), and H351 (Suspected of causing cancer). Appropriate personal protective equipment including eyeshields, gloves, and a suitable respirator (e.g., N100 US/P3 EN143) should be used. Handle in accordance with all applicable safety regulations.
Is Mestranol a controlled substance?
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The provided data does not indicate that Mestranol is a controlled substance. However, regulations can vary by jurisdiction.
How is Mestranol packed and shipped?
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Mestranol is carefully packed and exported by Tech Serve Solutions, adhering to international shipping standards for chemical products.
How can I request a sample or quote for Mestranol?
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To request a sample or quote for Mestranol, please contact our sales team through the website or by phone, providing your specific requirements.
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