5-PREGNEN-3β, 21-DIOL-20-ONE DIACETATE CAS 1693-63-6
| CAS No. | 1693-63-6 |
| Molecular Formula | C25H36O5 |
| Molecular Weight | 416.55 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
5-PREGNEN-3β, 21-DIOL-20-ONE DIACETATE (CAS 1693-63-6) is a high-purity analytical reference standard with the molecular formula C25H36O5 and a molecular weight of 416.55 g/mol.
5-PREGNEN-3β, 21-DIOL-20-ONE DIACETATE (C25H36O5) 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 presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO manufactures 5-PREGNEN-3β, 21-DIOL-20-ONE DIACETATE under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C25H36O5 |
| Molecular Weight | 416.55 g/mol |
| Appearance | Pale yellow to 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related PREGNEN Standards
- 5-PREGNEN-3β, 17-DIOL-20-ONE DIACETATE (CAS 1176-21-2)
- 5-PREGNEN-3β, 20α-DIOL DIACETATE (CAS 1913-47-9)
- 4-PREGNEN-11β, 21-DIOL-3, 18, 20-TRIONE 21-ACETATE (CAS 297-91-6)
- 4-PREGNEN-11β, 17, 21-TRIOL-3, 20-DIONE 3-O-CARBOXYMETHYLOXIME (CAS 43188-86-9)
- 4-PREGNEN-11β, 21-DIOL-3, 18, 20-TRIONE 18, 21-DIACETATE (CAS 3329-79-1)
- 5-PREGNEN-16, 17-EPOXY-3β, 21-DIOL-20-ONE 21-ACETATE (CAS 28444-97-5)
- 4-PREGNEN-3, 20-DIONE 3-O-CARBOXYMETHYLOXIME-(NH)-CH)10-(NH)-BIOTIN (CAS 50909-89-2)
- 4-PREGNEN-11β, 21-DIOL-3, 20-DIONE 21-HEMISUCCINATE (CAS 10215-77-7)
Recommended Standards
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- (2R,3S)-1-tert-butyl 3-ethyl 2-(4-(cyclopentylamino)phenyl)piperidine-1,3-dicarboxylate (CAS 2316782-11-1)
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- 1-(4-tert-Butylphenyl)-3-{[(4-fluorophenyl)methyl]sulfanyl}-5H,6H,7H-cyclopenta[c]pyridine-4-carbonitrile (CAS 439096-54-5)
- Z-Lys-NH? · HCl (CAS 112785-42-9)
- H-Pro-Phe-OH (CAS 13589-02-1)
- Ethyl 1-hydroxy-5,6,7,8-tetrahydronaphthalene-2-carboxylate (CAS 331282-05-4)
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- Tert-butyl 3-(2-amino-1-methoxyethyl)azetidine-1-carboxylate (CAS 2231675-99-1)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com