1-(3-Chlorophenyl)-1,2-propanedione 2-Oxime CAS 56472-71-0
| CAS No. | 56472-71-0 |
| Molecular Formula | C9H8ClNO2 |
| Molecular Weight | 197.62 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.
1-(3-Chlorophenyl)-1,2-propanedione 2-Oxime (CAS 56472-71-0) is a high-purity analytical reference standard with the molecular formula C9H8ClNO2 and a molecular weight of 197.62 g/mol.
The molecular framework of 1-(3-Chlorophenyl)-1,2-propanedione 2-Oxime (C9H8ClNO2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, 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.
As a certified reference material (CRM), 1-(3-Chlorophenyl)-1,2-propanedione 2-Oxime 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 | C9H8ClNO2 |
| Molecular Weight | 197.62 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 1973 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chlorophenyl Standards
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- (R)-4-(4-Chlorophenyl)oxazolidin-2-one (CAS 1147391-02-3)
- 4-(2-Chlorophenyl)oxazolidin-2-one (CAS 1462373-09-6)
- 1-(4-Chlorophenyl)-1,2-propanedione 2-oxime (CAS 56472-72-1)
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Recommended Standards
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