4-Methoxy 17beta-Estradiol CAS 26788-23-8
| CAS No. | 26788-23-8 |
| Molecular Formula | C19H26O3 |
| Molecular Weight | 302.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Methoxy 17beta-Estradiol.
4-Methoxy 17beta-Estradiol (CAS 26788-23-8) is a high-purity analytical reference standard with the molecular formula C19H26O3 and a molecular weight of 302.41 g/mol.
Based on its molecular formula C19H26O3, 4-Methoxy 17beta-Estradiol contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 302.41 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 4-Methoxy 17beta-Estradiol under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C19H26O3 |
| Molecular Weight | 302.41 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
Related Methoxy Standards
- 6α-Methoxy 17β-Estradiol (CAS 74312-88-2)
- 4-Methoxy-N-methyl-N-(4,5,6,7-tetrahydrobenzo[d]thiazol-2-yl)benzamide (CAS 866134-21-6)
- N-(4-Methoxy-3-(prop-2-yn-1-yl)benzo[d]thiazol-2(3H)-ylidene)pivalamide (CAS 868674-46-8)
- 3-Methoxy-7α-methyl-estra-2,5(10)-dien-17β-ol (CAS 15506-02-2)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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