2-Chloro-1,2-bis(4-methylphenyl)ethanone CAS 71193-32-3
| CAS No. | 71193-32-3 |
| Molecular Formula | C16H15ClO |
| Molecular Weight | 258.74 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 2-Chloro-1,2-bis(4-methylphenyl)ethanone (CAS 71193-32-3), a certified reference material (molecular formula C16H15ClO, MW 258.74 g/mol) for analytical method development and quality control.
Owing to a hydroxyl group, an ether linkage, chlorine substitution, a polycyclic aromatic system, 2-Chloro-1,2-bis(4-methylphenyl)ethanone is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 258.74 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C16H15ClO |
| Molecular Weight | 258.74 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.) | 1977 |
| Halogen Content | Cl-containing |
Related Chloro Standards
- 2-Chloro-1-[4-(pyrrolidine-1-carbonyl)piperidin-1-yl]ethan-1-one (CAS 1311313-62-8)
- (3-Chloro-4-fluoro-phenyl)-(4,4-dimethyl-4,5-dihydro-thiazol-2-yl)-amine (CAS 565196-27-2)
- 2-Chloro-3-(3-methylphenyl)propiophenone (CAS 898790-96-0)
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Recommended Standards
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- N-(3-Chlorophenyl)quinazolin-4-amine hydrochloride (CAS 146871-70-7)
- 2-(chloromethyl)-5,7-dimethyl-imidazo[1,2-a]pyrimidine;hydrochloride (CAS 1051941-62-8)
- 3-Chloro-4-methoxy-N-[2-(phenethyloxy)benzyl]-aniline (CAS 1040685-93-5)
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