17|A-Hydroxy-5|A,10|A-estran-3-one 22786-93-2 5|A,10|A-Estran-17|A-ol-3-one CAS 22786-93-2
| CAS No. | 22786-93-2 |
| Molecular Formula | C18H28O2 |
| Molecular Weight | 276.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
17|A-Hydroxy-5|A,10|A-estran-3-one 22786-93-2 5|A,10|A-Estran-17|A-ol-3-one (CAS 22786-93-2), molecular formula C18H28O2 and molecular weight 276.41 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, a hydroxyl group, an ether linkage, 17|A-Hydroxy-5|A,10|A-estran-3-one 22786-93-2 5|A,10|A-Estran-17|A-ol-3-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 276.41 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 | C18H28O2 |
| Molecular Weight | 276.41 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
Related A Standards
- 17b-Hydroxy-5b-estran-3-one (CAS 19468-31-6)
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- 6-(3-Hydroxy-3-methylbut-1-yn-1-yl)-4,4-dimethylthiochroman 1-oxide (CAS 864841-54-3)
- N-(1-hydroxy-2,2,6,6-tetramethylpiperidin-4-yl)benzamide (CAS 113230-84-5)
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Recommended Standards
- S-Kinoprene (CAS 65733-20-2)
- 2-propenoic acid 9-anthracenylmethyl ester 31645-34-8 A820939 anthracen-9-ylmethyl prop-2-enoate (CAS 31645-34-8)
- Phenyl Laurate (CAS 4228-00-6)
- (3|A,17|A)-Estr-5(10)-ene-3,17-diol 3|A,17|A-Dihydroxy-19-norandrost-5(10)-ene 4993-32-2 (CAS 4993-32-2)
- 4-Fluoro-1-methyl-2-(sulfinylamino)benzene (CAS 1785761-01-4)
- Ethyl 3-bromo-5-fluoro-4-nitrobenzoate (CAS 1807208-91-8)
- 2-(2-chlorophenyl)-1-(furan-3-yl)ethan-1-one (CAS 1184371-84-3)
- 2-Iodoprop-2-en-1-ol (CAS 84201-43-4)
- Avanafil Impurity 42 (CAS CATO-C4X-1118142)
- 2-Amino-5-nitrobenzothioamide (CAS 25026-97-5)
- N-Ethylisopropylamine (CAS 19961-27-4)
- n-((1h-Imidazol-2-yl)methyl)-2-(thiophen-2-yl)ethan-1-amine (CAS 1250893-48-1)
- 3-(4-Chlorobenzamido)benzoic acid (CAS 413574-79-5)
- Des-[Ser]8-Liraglutide (CAS CATO-C4X-199233)
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