(3α,5β)-3,17-Dihydroxypregnane-11,20-dione CAS 641-78-1
| CAS No. | 641-78-1 |
| Molecular Formula | C21H32O4 |
| Molecular Weight | 348.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (3α,5β)-3,17-Dihydroxypregnane-11,20-dione 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.
CATO supplies (3α,5β)-3,17-Dihydroxypregnane-11,20-dione (CAS 641-78-1), a certified reference material (molecular formula C21H32O4, MW 348.48 g/mol) for analytical method development and quality control.
The molecular framework of (3α,5β)-3,17-Dihydroxypregnane-11,20-dione (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 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 (3α,5β)-3,17-Dihydroxypregnane-11,20-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.
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.) | 1957 |
Recommended Standards
- (2E)-N-[2-[2-(1-Methyl-2-piperidinyl)ethyl]phenyl]-3-phenyl-2-propenamide (CAS 951155-18-3)
- (4-Benzylpiperazin-1-yl)(1-phenylcyclopentyl)methanone (CAS 942838-83-7)
- Tert-butyl (3-(1-(2-hydroxy-2-methylpropyl)piperidin-4-yl)phenyl)carbamate (CAS 1951440-90-6)
- (E)-3-(4-isobutylphenyl)-1-(4-phenylpiperazin-1-yl)prop-2-en-1-one (CAS 329778-16-7)
- 14814-55-2 2-Phenyl-cyclopropanecarboxylic acid hydrazide 2-phenylcyclopropane-1-carbohydrazide 2-phenylcyclopropanecarbohydrazide (CAS 14814-55-2)
- 2-((2-((2,4-Dichlorobenzyl)amino)-2-oxoethyl)thio)acetic acid (CAS 338421-43-5)
- Methyl 4-(4-Methylphenyl)-4-oxobutanoate (CAS 57498-54-1)
- 4-((2-Amino-4-fluorophenyl)amino)cyclohexan-1-ol (CAS 1233952-87-8)
- N-(4,5-Dihydro-1H-imidazol-2-yl)-2-methylpyrimidin-4-amine (CAS 748084-03-9)
- 2,2,4-Trimethyl-1,3-oxathiolan-5-one (CAS 60822-65-3)
- N-[2-(2,4-Dichlorophenyl)-2-hydroxyethyl]formamide (CAS 71162-52-2)
- Eltrombopag Impurity 63 HCl (CAS 60481-51-8)
- (Z)-1-Methoxybut-2-ene (CAS 10034-16-9)
- Smac-N7 Peptide (CAS 401913-57-3)
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