3-(2,4-Dichlorophenyl)-2H-chromen-2-one CAS 69976-31-4
| CAS No. | 69976-31-4 |
| Molecular Formula | C15H8Cl2O2 |
| Molecular Weight | 291.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 291.13 g/mol gives 3-(2,4-Dichlorophenyl)-2H-chromen-2-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3-(2,4-Dichlorophenyl)-2H-chromen-2-one (CAS 69976-31-4) is a high-purity analytical reference standard with the molecular formula C15H8Cl2O2 and a molecular weight of 291.13 g/mol.
Structurally, 3-(2,4-Dichlorophenyl)-2H-chromen-2-one (C15H8Cl2O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 291.13 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C15H8Cl2O2 |
| Molecular Weight | 291.13 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Halogen Content | Cl-containing |
Related Dichlorophenyl Standards
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- 4-(2,4-Dichlorophenyl)-1,2-dihydrophthalazin-1-one (CAS 1308436-00-1)
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Recommended Standards
- 2-Fluoro-N-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acrylamide (CAS 2901130-88-7)
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- 2-Ethoxy-5-fluoro-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile (CAS 2377607-13-9)
- 3,5-Dichloro-N-(3-cyanophenyl)benzamide (CAS 710315-93-8)
- N-(Furan-2-ylmethyl)-2-(2-((2-oxo-2-(thiophen-2-yl)ethyl)thio)thiazol-4-yl)acetamide (CAS 946277-33-4)
- 2,3-Dimethylpentanoic acid (CAS 82608-03-5)
- 2-[4-(Benzylamino)-2-ethylbutyl]-5,6-dimethoxyindan-1-one (CAS 958633-84-6)
- 3-Ethylpiperidin-4-amine (CAS 396133-40-7)
- 1,6-Dimethyl-2-(p-tolyl)-1H-imidazo[1,2-a]imidazole (CAS 827335-31-9)
- Vilanterol (CAS 503068-34-6)
- Articaine Impurity14 (CAS CATO-C4X-191214)
- 4-chloro-5-methylfuran-2-carboxylic acid (CAS 1531517-92-6)
- Benzyl (S)-3-(((tert-butoxycarbonyl)amino)methyl)pyrrolidine-1-carboxylate (CAS 1217708-58-1)
- Semaglutide Impurity 123 (CAS 71997-93-8)
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