5-PREGNEN-16, 17-EPOXY-3β, 21-DIOL-20-ONE 21-ACETATE CAS 28444-97-5
| CAS No. | 28444-97-5 |
| Molecular Formula | C23H32O5 |
| Molecular Weight | 388.50 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-PREGNEN-16, 17-EPOXY-3β, 21-DIOL-20-ONE 21-ACETATE (CAS 28444-97-5), a certified reference material (molecular formula C23H32O5, MW 388.50 g/mol) for analytical method development and quality control.
Structurally, 5-PREGNEN-16, 17-EPOXY-3β, 21-DIOL-20-ONE 21-ACETATE (C23H32O5) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 388.50 g/mol, it falls into the moderately-high-molecular-weight range. 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.
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 | C23H32O5 |
| Molecular Weight | 388.50 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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.) | 1965 |
Related PREGNEN Standards
- 4-PREGNEN-3, 20-DIONE 3-O-CARBOXYMETHYLOXIME-(NH)-CH)10-(NH)-BIOTIN (CAS 50909-89-2)
- 5-PREGNEN-16-METHYLENE-3β, 17-DIOL-20-ONE 3-ACETATE (CAS 15369-66-1)
- 4-PREGNEN-11β, 21-DIOL-3, 18, 20-TRIONE 21-ACETATE (CAS 297-91-6)
- 5-PREGNEN-3β, 17-DIOL-20-ONE 3-ACETATE (CAS 41906-06-3)
- 5-PREGNEN-3β, 20α-DIOL DIACETATE (CAS 1913-47-9)
- 5-PREGNEN-6-METHYL-3β-OL-20-ONE ACETATE (CAS 6222-82-8)
- 4-PREGNEN-1α, 11β, 21-TRIOL-3, 20-DIONE (CAS 10163-49-2)
- 4-PREGNEN-17, 19, 21-TRIOL-3, 20-DIONE (CAS 510-65-6)
Recommended Standards
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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