4-PREGNEN-17, 20α, 21-TRIOL-3, 11-DIONE CAS 566-38-1
| CAS No. | 566-38-1 |
| Molecular Formula | C21H30O5 |
| Molecular Weight | 362.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 4-PREGNEN-17, 20α, 21-TRIOL-3, 11-DIONE 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.
4-PREGNEN-17, 20α, 21-TRIOL-3, 11-DIONE (CAS 566-38-1) is a high-purity analytical reference standard with the molecular formula C21H30O5 and a molecular weight of 362.46 g/mol.
Structurally, 4-PREGNEN-17, 20α, 21-TRIOL-3, 11-DIONE (C21H30O5) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 362.46 g/mol, it falls into the moderately-high-molecular-weight range. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C21H30O5 |
| Molecular Weight | 362.46 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 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.) | 1957 |
Related PREGNEN Standards
- 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)
- 5-PREGNEN-6-METHYL-3β-OL-20-ONE ACETATE (CAS 6222-82-8)
- 5-PREGNEN-3β, 11β, 17, 20β-TETROL (CAS 19516-75-7)
- 5-PREGNEN-3β, 17-DIOL-20-ONE 3-ACETATE (CAS 41906-06-3)
- 4-PREGNEN-17, 20β, 21-TRIOL-3-ONE (CAS 128-19-8)
- 4-PREGNEN-17, 20α, 21-TRIOL-3-ONE (CAS 3946-10-9)
- 4-PREGNEN-6β, 21-DIOL-3, 20-DIONE (CAS 298-65-7)
Recommended Standards
- 6,8-Dimethoxy-4-methyl-1-[4-(propan-2-yl)phenyl]-1H,2H,3H-pyrrolo[3,2-c]quinoline (CAS 860789-38-4)
- 4-(5-{[4-(4-fluorophenyl)piperazin-1-yl]methyl}-1,3-thiazol-2-yl)morpholine (CAS 439121-17-2)
- 6-beta-Hydroxy-11-deoxycortisol (CAS 548-97-0)
- 4-(5,5-Dimethyl-1,3-dioxan-2-yl)-1-(phenanthren-9-yl)butan-1-one (CAS 898756-47-3)
- Chloculol (CAS 131652-35-2)
- 2-Bromo-3-chloro-5-fluorotoluene (CAS 1242339-16-7)
- (E)-2-Thiopheneacrylic Acid (CAS 15690-25-2)
- 2-(5-Bromo-2-fluorophenyl)acetonitrile, 97% (CAS 305800-60-6)
- 4-((2-Formyl-1H-pyrrol-1-yl)methyl)benzoic acid (CAS 1083350-94-0)
- (3R,4S)-1-benzyl-4-(3-methylphenyl)pyrrolidine-3-carboxylic acid (CAS 1394827-10-1)
- 1-(4-Bromophenyl)-3-(1,3-dioxan-2-yl)propan-1-one (CAS 376637-07-9)
- 1,2-Bis(octyloxy)benzene (CAS 956-41-6)
- n-(2-Acetamidoethyl)-3-bromothiophene-2-carboxamide (CAS 1241560-05-3)
- Acetyl Dipeptide-1 (CAS 196604-48-5)
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