4-PREGNEN-17, 20α, 21-TRIOL-3-ONE CAS 3946-10-9
| CAS No. | 3946-10-9 |
| Molecular Formula | C21H32O4 |
| Molecular Weight | 348.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-PREGNEN-17, 20α, 21-TRIOL-3-ONE 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.
4-PREGNEN-17, 20α, 21-TRIOL-3-ONE (CAS 3946-10-9) is a high-purity analytical reference standard with the molecular formula C21H32O4 and a molecular weight of 348.48 g/mol.
The molecular framework of 4-PREGNEN-17, 20α, 21-TRIOL-3-ONE (C21H32O4) is characterized by a steroid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
CATO manufactures 4-PREGNEN-17, 20α, 21-TRIOL-3-ONE 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 | C21H32O4 |
| Molecular Weight | 348.48 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related PREGNEN Standards
- 4-PREGNEN-17, 20β, 21-TRIOL-3-ONE (CAS 128-19-8)
- 5-PREGNEN-3β, 11β, 17, 20β-TETROL (CAS 19516-75-7)
- 4-PREGNEN-6β, 21-DIOL-3, 20-DIONE (CAS 298-65-7)
- 5-PREGNEN-6, 16α-DIMETHYL-3β-OL-20-ONE (CAS 5888-08-4)
- 5-PREGNEN-16, 17-EPOXY-16β-METHYL-3β-OL-20-ONE (CAS 1922-48-1)
- 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)
- 4-PREGNEN-17, 20α, 21-TRIOL-3, 11-DIONE (CAS 566-38-1)
Recommended Standards
- 4,5-Dimethyl-2-(3-(p-tolylthio)propanamido)thiophene-3-carboxamide (CAS 896291-56-8)
- 5-(tert-Butyl)-2-methyl-3-phenyl-7-(piperidin-1-yl)pyrazolo[1,5-a]pyrimidine (CAS 849910-44-7)
- 2,6-Di-tert-butyl-4-hydroxy-4-phenylnaphthalen-1(4H)-one (CAS 31592-24-2)
- 5,6-Dihydro-5,6-dihydroxyretinoic Acid Methyl Ester (CAS 75664-64-1)
- 5,6-difluoroquinazolin-2-amine (CAS 190273-85-9)
- 4-ANDROSTEN-17β- OL-3-ONE ENANTHATE-3-BENZILOYLHYDRAZONE (CAS 18625-33-7)
- N,N-diethyl-2-nitro-4-(trifluoromethyl)aniline (CAS 254754-76-2)
- 2-(Cyanomethyl)-5,7-bis(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-3-carbonitrile (CAS 338786-45-1)
- 3-Methoxyquinolin-7-amine (CAS 2225878-56-6)
- Otilonium Bromide Impurity 17 (CAS CATO-C4X-194417)
- 6-Chloro-5-iodo-2-methylsulfanyl-pyrimidin-4-ol (CAS 917895-50-2)
- methyl 3-(5-formylfuran-2-yl)propanoate (CAS 60457-58-1)
- N-ethyl-N-methylprop-2-enamide (CAS 52089-44-8)
- Semaglutide Impurity 138 (CAS CATO-C4X-2226138)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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