5a-Estrane-3b,17a-diol CAS 93602-55-2
| CAS No. | 93602-55-2 |
| Molecular Formula | C18H30O2 |
| Molecular Weight | 278.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
CATO supplies 5a-Estrane-3b,17a-diol (CAS 93602-55-2), a certified reference material (molecular formula C18H30O2, MW 278.43 g/mol) for analytical method development and quality control.
Based on its molecular formula C18H30O2, 5a-Estrane-3b,17a-diol 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 278.43 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.
Physical & Chemical Properties
| Molecular Formula | C18H30O2 |
| Molecular Weight | 278.43 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
Recommended Standards
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- 5-(azepane-1-sulfonyl)pyridine-2-thiol (CAS 852956-28-6)
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- 1-Cyclopropyl-2-(2-methylphenyl)ethan-1-amine (CAS 56595-04-1)
- 4,4'-(9H-Fluorene-9,9-diyl)bis(2-methylphenol) (CAS 88938-12-9)
- 2-((5-Methylisoxazol-3-yl)methoxy)acetic acid (CAS 1018168-48-3)
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- 1,2,4-Trifluoro-5-isocyanatobenzene (CAS 932710-67-3)
- Peptide 431 (CAS CATO-CPTD788431)
Why CATO?
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