5beta-Androstane-3alpha,17beta-diol CAS 19767-69-2
| CAS No. | 19767-69-2 |
| Molecular Formula | C19H32O2 |
| Molecular Weight | 292.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5beta-Androstane-3alpha,17beta-diol (CAS 19767-69-2), molecular formula C19H32O2 and molecular weight 292.46 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C19H32O2, 5beta-Androstane-3alpha,17beta-diol contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 292.46 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C19H32O2 |
| Molecular Weight | 292.46 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
Related beta Standards
- 5β-Androstane-3α,17α-diol (CAS 5856-10-0)
- 5β-Androstane-3β,17β-diol (CAS 6038-31-9)
- 5α-Androstane-3α，17β-diol-[d3]100ug/ml in Methanol (CAS 79037-33-5)
- 5α-Androstane-3β,17β-diol-d3 (CAS 79037-32-4)
- (5|A)-Androstane-3,11,17-trione 1482-70-8 5|A-Androstane-3,11,17-trione (CAS 1482-70-8)
- 17α-Methyl-5β-androstane-3α，17β-diol (CAS 641-84-9)
- 17-Methyl-5α-androstane-3β,16α,17β-triol (CAS 188525-77-1)
- 17-Methyl-5α-androstane-3β,16β,17β-triol (CAS 38863-74-0)
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