5β-PREGNAN-3α, 17, 21-TRIOL-11, 20-DIONE 3, 21-DIACETATE CAS 28439-40-9
| CAS No. | 28439-40-9 |
| Molecular Formula | C25H36O7 |
| Molecular Weight | 448.55 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5β-PREGNAN-3α, 17, 21-TRIOL-11, 20-DIONE 3, 21-DIACETATE.
5β-PREGNAN-3α, 17, 21-TRIOL-11, 20-DIONE 3, 21-DIACETATE (CAS 28439-40-9) is a high-purity analytical reference standard with the molecular formula C25H36O7 and a molecular weight of 448.55 g/mol.
5β-PREGNAN-3α, 17, 21-TRIOL-11, 20-DIONE 3, 21-DIACETATE (C25H36O7) 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.
CATO manufactures 5β-PREGNAN-3α, 17, 21-TRIOL-11, 20-DIONE 3, 21-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 | C25H36O7 |
| Molecular Weight | 448.55 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.) | 1965 |
Related PREGNAN Standards
- 5α-PREGNAN-3α, 11β, 17, 21-TETROL-20-ONE 3, 21-DIACETATE (CAS 4004-70-0)
- 5β-PREGNAN-3α, 12α-DIOL-20-ONE DIACETATE (CAS 15991-93-2)
- 5β-PREGNAN-3α, 17, 21-TRIOL-11, 20-DIONE 21-ACETATE (CAS 17736-20-8)
- 5β-PREGNAN-3α, 17, 21-TRIOL-11, 20-DIONE 3-ACETATE (CAS 36623-16-2)
- 5β-PREGNAN-3α, 20α-DIOL DIACETATE (CAS 1174-69-2)
- 5α-PREGNAN-3α, 20α-DIOL DIACETATE (CAS 6003-18-5)
- 5α-Pregnan-11β,17α,21-triol-3,20-dione-1,2,4,5-d4 (CAS 252976-11-7)
- 5α-PREGNAN-3β, 11β, 17, 21-TETROL-20-ONE (CAS 651-43-4)
Recommended Standards
- 3β,5β-Tetrahydro Cortisone 3,21-Diacetate (CAS 4003-93-4)
- Methyl 2-3-4-tri-O-benzyl-L-fucopyranoside (CAS 67576-77-6)
- 3aR,4R,5R,6aS)-Hexahydro-4-[(1E,3S)-3-hydroxy-1-octen-1-yl]-2-oxo-2H-cyclopenta[b]furan-5-yl Ester [1,1-Biphenyl]-4-carboxylic Acid (CAS 51014-26-7)
- Methyl 2-3-4-tri-O-benzyl-β-L-fucopyranoside (CAS 74841-88-6)
- 29885-95-8 M0801 N-MATFA N-Methylaniline Trifluoroacetate N-Methylanilinium Trifluoroacetate (CAS 29885-95-8)
- Ciclopirox (CAS 29342-05-0)
- Ethyl 4-(difluoromethyl)-2-methylthiazole-5-carboxylate (CAS 823234-82-8)
- Difamilast Impurity 1 (CAS 1574285-40-7)
- (3R,4S,5S,6R)-6-(acetoxymethyl)-3-fluorotetrahydro-2H-pyran-2,4,5-triyl triacetate (CAS 262607-48-7)
- 3-(1-fluoroethyl)oxetane-3-carboxylic acid (CAS 1782557-91-8)
- (2-(3-Ethylphenyl)oxazol-4-yl)methanol (CAS 885272-71-9)
- tert-Butyl (2R,4R)-2-(hydroxymethyl)-4-(methylamino)pyrrolidine-1-carboxylate (CAS 1932583-22-6)
- Ethyl 9-oxo-1H,6H,9H-pyrido[2,3-g]indazole-8-carboxylate (CAS 65642-22-0)
- 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
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com