5β-androstan-3β-ol-17-one CAS 571-31-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 571-31-3 |
| Molecular Formula | C19H30O2 |
| Molecular Weight | 290.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5β-androstan-3β-ol-17-one (CAS 571-31-3) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C19H30O2. Molecular weight: 290.44 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C19H30O2 |
| Molecular Weight | 290.44 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related androstan Standards
- 5a-ANDROSTAN-16a-OL-17-ONE (CAS 25846-17-7)
- 5α-ANDROSTAN-3β-OL-16-ONE (CAS 571-51-7)
- 5Alpha-Androstan-17Beta-Ol-3-One (CAS 521-18-6)
- 17α-Methyl-5α-androstan-17β-ol (CAS 1229-04-5)
- 5α-Androstan-3α-ol-17-one-16,16-d (CAS 89685-22-3)
- 5α-Androstan-3β-ol-17-one-16,16-d (CAS 79037-35-7)
- 5α-ANDROSTAN-3, 16-DIONE (CAS 1035-71-8)
- 5α-ANDROSTAN-3β, 16α-DIOL (CAS 22630-49-5)
Recommended Standards
- 6-((4,7,7-Trimethyloctan-2-yl)oxy)-2,3-dihydrobenzofuran (CAS 62753-42-8)
- 5-ANDROSTEN-3β, 16α-DIOL-17-ONE (CAS 3642-89-5)
- Testosterone Impurity N14 (CAS 47122-33-8)
- Ethyl 3-bromo-2-cyano-4-(trifluoromethyl)benzoate (CAS 1806850-00-9)
- 2-((4-Cyclopropyl-5-oxo-3-(thiophen-2-yl)-4,5-dihydro-1H-1,2,4-triazol-1-yl)methyl)benzonitrile (CAS 1428367-53-6)
- N-(2,5-difluorophenyl)-2-((4,6-dimethylpyrimidin-2-yl)thio)acetamide (CAS 303091-58-9)
- 1-(Bromomethyl)-3,5-dichlorobenzene (CAS 7778-01-0)
- 3-Hydroxy-2-ethylpropionic acid (CAS 4374-62-3)
- 5-aminotetrahydro-2H-pyran-3-carbonitrile (CAS 2091702-11-1)
- Semaglutide impurity 250 (CAS CATO-C4X-2226250)
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