4-Chloro-4-androsten-3α-ol-17-one CAS 51348-73-3
| CAS No. | 51348-73-3 |
| Molecular Formula | C19H27ClO2 |
| Molecular Weight | 322.87 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.
CATO supplies 4-Chloro-4-androsten-3α-ol-17-one (CAS 51348-73-3), a certified reference material (molecular formula C19H27ClO2, MW 322.87 g/mol) for analytical method development and quality control.
Based on its molecular formula C19H27ClO2, 4-Chloro-4-androsten-3α-ol-17-one contains a steroid core, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 322.87 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO manufactures 4-Chloro-4-androsten-3α-ol-17-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C19H27ClO2 |
| Molecular Weight | 322.87 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 |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
| Halogen Content | Cl-containing |
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Recommended Standards
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- Clostebol (CAS 1093-58-9)
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- 3-(2-Chloroethyl)-1H-pyrrolo[2,3-b]pyridine (CAS 90929-74-1)
- 1-(2-(4-(tert-Butyl)phenyl)-2-((2,3-dihydro-1H-inden-2-yl)amino)ethyl)-3-(trifluoromethyl)pyridin-2(1H)-one (CAS 1207481-21-7)
- 4-[(4-methoxyphenyl)methoxy]butanenitrile (CAS 1021042-96-5)
- 2-(3,5-Bis(trifluoromethyl)phenyl)-2-oxoacetamide (CAS 887268-11-3)
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- H-Lys-Phe-Gly-Lys-OH (H-4205.0050) (CAS 114577-12-7)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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