(3β,20S)-20-Methyl-pregn-5-ene-3,21-diol 3-Acetate 21-Tosyl CAS 120664-97-3
| CAS No. | 120664-97-3 |
| Molecular Formula | C31H44O5S |
| Molecular Weight | 528.74 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(3β,20S)-20-Methyl-pregn-5-ene-3,21-diol 3-Acetate 21-Tosyl (CAS 120664-97-3) is a high-purity analytical reference standard with the molecular formula C31H44O5S and a molecular weight of 528.74 g/mol.
Structurally, (3β,20S)-20-Methyl-pregn-5-ene-3,21-diol 3-Acetate 21-Tosyl (C31H44O5S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 528.74 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).
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.
CATO manufactures (3β,20S)-20-Methyl-pregn-5-ene-3,21-diol 3-Acetate 21-Tosyl 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 | C31H44O5S |
| Molecular Weight | 528.74 g/mol |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Sulfur Atoms | 1 |
Recommended Standards
- Mianserin Impurity 119 (CAS CATO-C4X-1369119)
- (2R,3R,4S)-2-((R)-1-(Dodecanoyloxy)-2-hydroxyethyl)-4-hydroxytetrahydrofuran-3-yl dodecanoate (CAS 28905-44-4)
- Perindopril EP Impurity H (CAS 353777-64-7)
- 2,4-Dichloro-N-((5-chloro-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)methyl)-N-(4-methoxyphenyl)benzenesulfonamide (CAS 957041-78-0)
- Boc-ε-aminocaproic acid-OSu (CAS 51513-80-5)
- (7-Chloro-2,3-dihydrofuro[2,3-c]pyridin-3-yl)methanol (CAS 174469-04-6)
- 5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)quinolin-7-ol (CAS 2768872-08-6)
- 2-Me-D-Trp-OH (CAS 140852-06-8)
- 1-Benzhydryl-3-hydrazinylazetidine (CAS 1025899-41-5)
- (4-Bromopyrimidin-2-yl)cyclopentylamine (CAS 1269291-43-1)
- 2-((1-Cyanocyclohexyl)amino)-2-oxoethyl 2,3-dimethyl-1H-indole-5-carboxylate (CAS 878098-07-8)
- 2-Hydroxy-5-((5-oxo-6-phenyl-4,5-dihydro-1,2,4-triazin-3-yl)amino)benzoic acid (CAS 1417635-98-3)
- 4-(Benzyloxy)-5-bromo-2-(pyrrolidin-1-yl)pyrimidine (CAS 885952-21-6)
- D-Asp15-Tirzepatide (CAS CATO-CPTD788919)
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