5α-ANDROSTAN-17β-OL-3, 7-DIONE CAS 55541-91-8
| CAS No. | 55541-91-8 |
| Molecular Formula | C19H28O3 |
| Molecular Weight | 304.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5α-ANDROSTAN-17β-OL-3, 7-DIONE (CAS 55541-91-8), molecular formula C19H28O3 and molecular weight 304.42 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C19H28O3, 5α-ANDROSTAN-17β-OL-3, 7-DIONE 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 304.42 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a certified reference material (CRM), 5α-ANDROSTAN-17β-OL-3, 7-DIONE meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C19H28O3 |
| Molecular Weight | 304.42 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.) | 1972 |
Related ANDROSTAN Standards
- 5α-ANDROSTAN-17β-OL-3, 6-DIONE (CAS 899-39-8)
- 5α-ANDROSTAN-3β-OL-11, 17-DIONE (CAS 7090-90-6)
- 5α-ANDROSTAN-3β-OL-7, 17-DIONE (CAS 49643-99-4)
- 5β-ANDROSTAN-3, 11, 17-TRIONE (CAS 1429-06-7)
- 5α-ANDROSTAN-3, 6, 17-TRIONE (CAS 2243-05-2)
- 5β-ANDROSTAN-3α, 17β-DIOL-11-ONE (CAS 1158-94-7)
- 5β-ANDROSTAN-3α, 16α-DIOL-17-ONE (CAS 14167-50-1)
- 5α-ANDROSTAN-11α, 17β-DIOL-3-ONE (CAS 25788-56-1)
Recommended Standards
- 5-ANDROSTEN-3β, 19-DIOL-17-ONE (CAS 2857-45-6)
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- 2-{pyrrolo[2,1-f][1,2,4]triazin-5-yl}ethan-1-ol (CAS 1525466-27-6)
- 2-Amino-2-(4-bromophenyl)acetic acid (CAS 129592-99-0)
- 2-Ethylpiperidin-4-one hydrochloride (CAS 1245643-87-1)
- chlorocyclopropane (CAS 7393-45-5)
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- 2-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazolo[3,4-b]pyridine (CAS 1809889-70-0)
- Manganese(II) phosphate hydrate (CAS 109135-78-6)
- Kojic Acid Sodium Salt (CAS 70145-54-9)
- Insulin Pork(≥27 USP units/mg) (CAS 12584-58-6)
Why CATO?
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