5-ANDROSTEN-3β-OL-11, 17-DIONE CAS 17520-02-4
| CAS No. | 17520-02-4 |
| Molecular Formula | C19H26O3 |
| Molecular Weight | 302.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-ANDROSTEN-3β-OL-11, 17-DIONE is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-ANDROSTEN-3β-OL-11, 17-DIONE (CAS 17520-02-4), molecular formula C19H26O3 and molecular weight 302.41 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, a hydroxyl group, an ether linkage, 5-ANDROSTEN-3β-OL-11, 17-DIONE is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 302.41 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
Physical & Chemical Properties
| Molecular Formula | C19H26O3 |
| Molecular Weight | 302.41 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| 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.) | 1962 |
Related ANDROSTEN Standards
- 4-ANDROSTEN-17β-OL-3, 16-DIONE (CAS 6132-10-1)
- 5-ANDROSTEN-3β-OL-16, 17-DIONE (CAS 571-05-1)
- 5-ANDROSTEN-3β-OL-17-ONE OXIME (CAS 2830-48-0)
- 5-ANDROSTEN-3β, 17β-DIOL-16-ONE (CAS 1159-66-6)
- 4-ANDROSTEN-3β, 17β-DIOL-11-ONE (CAS 14485-67-7)
- 4-ANDROSTEN-17β, 18-DIOL-3-ONE (CAS 7150-17-6)
- 4-ANDROSTEN-4, 17β-DIOL-3-ONE (CAS 2141-17-5)
- 4-ANDROSTEN-7α, 17β-DIOL-3-ONE (CAS 62-83-9)
Recommended Standards
- Carisoprodol Isopropyl Impurity (CAS 1729-14-2)
- 4-Desmethoxy Omeprazole-d3 Sulfide (CAS 1794938-78-5)
- 3-Methyl-2-(methylthio)-7-(o-tolyl)thieno[3,2-d]pyrimidin-4(3H)-one (CAS 1707392-20-8)
- N-(4-Ethoxyphenyl)-4-(thiophen-3-yl)-1,3-thiazol-2-amine (CAS 1797206-90-6)
- 2,4-Diamino-6-methylpyrimidin-5-yl ethyl succinate (CAS 62812-21-9)
- 3-Chloro-2-ethoxy-5-methylpyridine (CAS 1881320-86-0)
- 2-{[1-(2,2,2-trifluoroethyl)-1H-pyrazol-3-yl]methyl}-2,3-dihydro-1H-isoindole-1,3-dione (CAS 1384856-24-9)
- 2-(2-Acetamido-4-(p-tolyl)thiazol-5-yl)acetic acid (CAS 1181367-03-2)
- Esmolol Impurity 75 (CAS CATO-C4X-189175)
- rel-(2R,7aS)-2-Fluoro-7a-methylhexahydro-1H-pyrrolizine (CAS 2758756-38-4)
- 5-nitro-2-(propylsulfanyl)benzoic acid (CAS 1019562-08-3)
- 2-(3-(1,3-Dioxolan-2-yl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1257648-34-2)
- Pinitol diacetonide (CAS 57819-56-4)
- Semaglutide impurity 247 (CAS CATO-C4X-2226247)
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