4-(4-Chlorobenzoyl)-1-[(3,4-dichlorophenyl)methyl]-3-methyl-1,2,3,4-tetrahydroquinoxalin-2-one CAS 317822-29-0
| CAS No. | 317822-29-0 |
| Molecular Formula | C23H17Cl3N2O2 |
| Molecular Weight | 459.75 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(4-Chlorobenzoyl)-1-[(3,4-dichlorophenyl)methyl]-3-methyl-1,2,3,4-tetrahydroquinoxalin-2-one (C23H17Cl3N2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
4-(4-Chlorobenzoyl)-1-[(3,4-dichlorophenyl)methyl]-3-methyl-1,2,3,4-tetrahydroquinoxalin-2-one (CAS 317822-29-0) is a high-purity analytical reference standard with the molecular formula C23H17Cl3N2O2 and a molecular weight of 459.75 g/mol.
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.
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 | C23H17Cl3N2O2 |
| Molecular Weight | 459.75 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorobenzoyl Standards
- 4-(4-Chlorobenzoyl)-1-(2,4-dichlorobenzyl)-3-methyl-3,4-dihydroquinoxalin-2(1H)-one (CAS 317822-45-0)
- 4-(4-Chlorobenzoyl)-1-(2,6-dichlorobenzyl)-3-methyl-3,4-dihydroquinoxalin-2(1H)-one (CAS 317822-30-3)
- (Z)-3-(((4-chlorobenzoyl)oxy)imino)-1-(2,4-dichlorobenzyl)indolin-2-one (CAS 320419-58-7)
- 4-(4-Chlorobenzoyl)-3-methyl-1-(4-(trifluoromethyl)benzyl)-3,4-dihydroquinoxalin-2(1H)-one (CAS 317822-28-9)
- 5-(4-Chlorobenzoyl)-6-(3,4-dimethoxyphenyl)-4-hydroxy-4-(trifluoromethyl)tetrahydropyrimidin-2(1H)-one (CAS 623936-46-9)
- 5-(4-Chlorobenzoyl)-6-(3-ethoxy-4-hydroxyphenyl)-4-hydroxy-4-(trifluoromethyl)tetrahydropyrimidin-2(1H)-one (CAS 474005-43-1)
- 2-(4-Chlorobenzoyl)-3-[({[3-(trifluoromethyl)phenyl]methyl}sulfanyl)methyl]-1-benzofuran (CAS 400082-36-2)
- [2-[[3-(2-Chlorobenzoyl)-5-ethyl-2-thienyl]amino]-2-oxoethyl]carbamic Acid Benzyl Ester (CAS 50508-73-1)
Recommended Standards
- 7,9-Dichloro-5-(4-chlorophenyl)-2-(4-methoxyphenyl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazine (CAS 303061-38-3)
- 9-Chloro-5-(2,4-dichlorophenyl)-2-(4-methoxyphenyl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazine (CAS 303059-64-5)
- 2-(3,4-Dimethoxyphenyl)-1,3-bis(4-methoxybenzyl)imidazolidine (CAS 5428-36-4)
- (1E,4E)-1-(4-chlorophenyl)-5-(2-(6-(2,4-dichlorobenzyl)pyridazin-3-yl)hydrazinyl)penta-1,4-dien-3-one (CAS 860649-35-0)
- 2,3-Dichloroquinoxaline-5-carbonyl chloride (CAS 1919-39-7)
- 1-tert-butyl-6-chloro-1H,4H,5H-pyrazolo[3,4-d]pyrimidine (CAS 1240528-60-2)
- 1-Oxo-N-(p-tolyl)isochromane-3-carboxamide (CAS 868154-12-5)
- 3'-Fluoro-[1,1'-biphenyl]-2-amine hydrochloride (CAS 139769-18-9)
- Benzo[d]isothiazol-7-ylmethanamine (CAS 1493572-84-1)
- 7-(Piperazin-1-yl)benzo[d]oxazol-2(3H)-one hydrochloride (CAS 848154-38-1)
- 6-Bromo-3-ethyl-2-hydrazinylquinoline (CAS 1017147-75-9)
- Avanafil Impurity N59 (CAS 27427-92-5)
- 2-(Tetrahydro-2H-pyran-4-yl)pyridine (CAS 26684-64-0)
- Hexapeptide-10 (CAS 146439-94-3)
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