11,17,21-Trihydroxy-pregn-5-ene-3,20-dione 3,20-Diethylene Ketal CAS 76338-54-0
| CAS No. | 76338-54-0 |
| Molecular Formula | C25H38O7 |
| Molecular Weight | 450.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 11,17,21-Trihydroxy-pregn-5-ene-3,20-dione 3,20-Diethylene Ketal 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.
11,17,21-Trihydroxy-pregn-5-ene-3,20-dione 3,20-Diethylene Ketal (CAS 76338-54-0) is a high-purity analytical reference standard with the molecular formula C25H38O7 and a molecular weight of 450.57 g/mol.
11,17,21-Trihydroxy-pregn-5-ene-3,20-dione 3,20-Diethylene Ketal (C25H38O7) contains a flavonoid core, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 | C25H38O7 |
| Molecular Weight | 450.57 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 1978 |
Related Trihydroxy Standards
- 11α,17α,21-Trihydroxy-pregn-5-ene-3,20-dione 3,20-Diethylene Ketal (CAS 102030-55-7)
- (3α,5β,7α,12α,24E)-3,7,12-Trihydroxy-cholest-24-en-26-oic Acid (CAS 85552-38-1)
- 11,17,21-Trihydroxy-pregn-5-ene-3,20-dione-d (CAS 134354-11-3)
- 3,4,5-Trihydroxy-6-((5-hydroxy-3-(4-methoxyphenyl)-4-oxo-4H-chromen-7-yl)oxy)tetrahydro-2H-pyran-2-carboxylic acid (CAS 38482-76-7)
- 3β,7β,15β-trihydroxy-11-oxo-lanosta-8-en-24→20 lactone (CAS 1694587-15-9)
- 3β,7α,12α-Trihydroxy-5β-cholanic Acid Methyl Ester (CAS 28050-54-6)
- 5，7，4’-Trihydroxy-3，6-dimethoxy-3’，5’-diprenylflavone (CAS 1246926-08-8)
- 2,3,8-Trihydroxy-7-(((2S,3R,4S,5R)-3,4,5-trihydroxytetrahydro-2H-pyran-2-yl)oxy)chromeno[5,4,3-cde]chromene-5,10-dione (CAS 139163-18-1)
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- 4',4''',4''''',4'''''''-(Ethene-1,1,2,2-tetrayl)tetrakis(([1,1'-biphenyl]-4-carbonitrile)) (CAS 608129-43-7)
- Semaglutide impurity 59 (CAS CATO-C4X-222659)
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