(17β)-17-Hydroxy-17-methyl-estra-5(10),9(11)-dien-3-one Cyclic 1,2-Ethanediyl Acetal CAS 54690-62-9
| CAS No. | 54690-62-9 |
| Molecular Formula | C21H30O3 |
| Molecular Weight | 330.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (17β)-17-Hydroxy-17-methyl-estra-5(10),9(11)-dien-3-one Cyclic 1,2-Ethanediyl Acetal 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.
CATO supplies (17β)-17-Hydroxy-17-methyl-estra-5(10),9(11)-dien-3-one Cyclic 1,2-Ethanediyl Acetal (CAS 54690-62-9), a certified reference material (molecular formula C21H30O3, MW 330.46 g/mol) for analytical method development and quality control.
Owing to a steroid core, a hydroxyl group, an ether linkage, (17β)-17-Hydroxy-17-methyl-estra-5(10),9(11)-dien-3-one Cyclic 1,2-Ethanediyl Acetal is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 330.46 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.
As a certified reference material (CRM), (17β)-17-Hydroxy-17-methyl-estra-5(10),9(11)-dien-3-one Cyclic 1,2-Ethanediyl Acetal meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C21H30O3 |
| Molecular Weight | 330.46 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.) | 1972 |
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Recommended Standards
- (1'R,2'R,4'S)-5'-methyl-4-pentyl-2'-(prop-1-en-2-yl)-1',2',3',4'-tetrahydro-[1,1'-biphenyl]-2,4',6-triol (CAS 58940-28-6)
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