4-ANDROSTEN-4-CHLORO-17β-OL-3-ONE PROPIONATE CAS 2162-44-9
| CAS No. | 2162-44-9 |
| Molecular Formula | C22H31ClO3 |
| Molecular Weight | 378.93 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-ANDROSTEN-4-CHLORO-17β-OL-3-ONE PROPIONATE (CAS 2162-44-9), molecular formula C22H31ClO3 and molecular weight 378.93 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-ANDROSTEN-4-CHLORO-17β-OL-3-ONE PROPIONATE (C22H31ClO3) is characterized by a steroid core, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C22H31ClO3 |
| Molecular Weight | 378.93 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
Related ANDROSTEN Standards
- 4-ANDROSTEN-17α-METHYL-17β-OL-3-ONE 3-O-CARBOXYMETHYLOXIME (CAS 67376-99-2)
- 4-ANDROSTEN-3β, 17β-DIOL-11-ONE DIACETATE (CAS 4134-41-2)
- 5-Androsten-3β-ol-17-one Methanesulfonate (CAS 25810-70-2)
- 5-ANDROSTEN-3β-OL-7, 17-DIONE ACETATE (CAS 2439-98-7)
- 5-ANDROSTEN-3β, 16α-DIOL-17-ONE 3-ACETATE (CAS 13570-63-3)
- 5-Androsten-3beta-Ol-17-One Ethyleneketal (CAS 7745-40-6)
- 5-ANDROSTEN-3β, 16β, 17β-TRIOL (CAS 14474-06-7)
- 4-ANDROSTEN-3β, 6β, 17β-TRIOL (CAS 15780-14-0)
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