1Alpha-Methyl-5Alpha-androstane-3Beta,17Beta-diol CAS 4011-44-3
| CAS No. | 4011-44-3 |
| Molecular Formula | C20H34O2 |
| Molecular Weight | 306.48 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 1Alpha-Methyl-5Alpha-androstane-3Beta,17Beta-diol.
1Alpha-Methyl-5Alpha-androstane-3Beta,17Beta-diol (CAS 4011-44-3) is a high-purity analytical reference standard with the molecular formula C20H34O2 and a molecular weight of 306.48 g/mol.
Owing to a steroid core, a hydroxyl group, an ether linkage, 1Alpha-Methyl-5Alpha-androstane-3Beta,17Beta-diol is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 306.48 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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 | C20H34O2 |
| Molecular Weight | 306.48 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.) | 1958 |
Recommended Standards
- 17α-Methyl-5β-androstane-3α，17β-diol (CAS 641-84-9)
- 1a-Methyl-5a-androstan-3a,17b-diol (CAS 4349-94-4)
- 17a-Methyl-5a-androstan-3a,17B-diol (CAS 641-82-7)
- 5-cis,8-cis,11-cis-Eicosatrienoic acid (CAS 20590-32-3)
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