1-(4-Chloro-3-methylphenyl)-2-phenylethanone CAS 201990-40-1
| CAS No. | 201990-40-1 |
| Molecular Formula | C15H13ClO |
| Molecular Weight | 244.72 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-(4-Chloro-3-methylphenyl)-2-phenylethanone (CAS 201990-40-1) is a high-purity analytical reference standard with the molecular formula C15H13ClO and a molecular weight of 244.72 g/mol.
Based on its molecular formula C15H13ClO, 1-(4-Chloro-3-methylphenyl)-2-phenylethanone contains a hydroxyl group, an ether linkage, chlorine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 244.72 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 1-(4-Chloro-3-methylphenyl)-2-phenylethanone 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 | C15H13ClO |
| Molecular Weight | 244.72 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2014 |
| Halogen Content | Cl-containing |
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Recommended Standards
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- 1-benzyl-2,6-diethyl-4-phenylpyridinium tetrafluoroborate (CAS 88292-62-0)
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- Captopril EP Impurity C (CAS 26473-47-2)
- 4-Acetylpiperazine-2-carboxylic acid (CAS 1215470-40-8)
- 1-((3-Bromo-4-methoxyphenyl)sulfonyl)-4-((tert-butyldiphenylsilyl)oxy)piperidine (CAS 1704081-29-7)
- n-[(2,6-difluorophenyl)methyl]cyclopentanamine (CAS 1019629-72-1)
- 2-((4,6-Dimethylpyrimidin-2-yl)thio)-1-(thiophen-2-yl)ethan-1-one (CAS 334500-76-4)
- Pemetrexed Impurity (CAS CATO-C4X-172640)
- 59880-97-6 Chemotactic peptide F-Met-Leu-Phe L-Phenylalanine, N-(N-(N-formyl-L-methionyl)-L-leucyl)- N-Formyl-L-methionyl-L-leucyl-L-phenylalanine N-Formyl-Met-Leu-Phe N-Formylmethionine leucyl-phenylalanine fMLF fMLP (misnomer but widely used) (CAS 59880-97-6)
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