1-(2,6-Dichlorobenzyl)-4-(2,4-difluorobenzoyl)-3-methyl-3,4-dihydroquinoxalin-2(1H)-one CAS 317822-44-9
| CAS No. | 317822-44-9 |
| Molecular Formula | C23H16Cl2F2N2O2 |
| Molecular Weight | 461.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
1-(2,6-Dichlorobenzyl)-4-(2,4-difluorobenzoyl)-3-methyl-3,4-dihydroquinoxalin-2(1H)-one (CAS 317822-44-9), molecular formula C23H16Cl2F2N2O2 and molecular weight 461.29 g/mol, is a CATO reference standard with documented purity and traceability.
1-(2,6-Dichlorobenzyl)-4-(2,4-difluorobenzoyl)-3-methyl-3,4-dihydroquinoxalin-2(1H)-one (C23H16Cl2F2N2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/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. 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-(2,6-Dichlorobenzyl)-4-(2,4-difluorobenzoyl)-3-methyl-3,4-dihydroquinoxalin-2(1H)-one 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 | C23H16Cl2F2N2O2 |
| Molecular Weight | 461.29 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 | F/Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichlorobenzyl Standards
- 1-(2,6-Dichlorobenzyl)-4-(2,6-difluorobenzoyl)-3-methyl-3,4-dihydroquinoxalin-2(1H)-one (CAS 317833-50-4)
- 5-(4-((2,4-Dichlorobenzyl)oxy)-3-iodophenyl)-1,3,4-oxadiazol-2-amine (CAS 1706448-72-7)
- 2-((2,4-Dichlorobenzyl)thio)-4-(3,4-dichlorophenoxy)-5-methoxypyrimidine (CAS 866017-30-3)
- 2-((2,6-Dichlorobenzyl)thio)-4-(3,4-dichlorophenoxy)-5-methoxypyrimidine (CAS 338955-98-9)
- 3-((2,6-Dichlorobenzyl)sulfonyl)-N-(2,4-difluorophenyl)thiophene-2-carboxamide (CAS 251097-08-2)
- 3-((3,4-Dichlorobenzyl)sulfonyl)-N-(2,4-difluorophenyl)thiophene-2-carboxamide (CAS 251097-76-4)
- 3-((3,4-Dichlorobenzyl)thio)-N-(3,4-dichlorophenyl)thiophene-2-carboxamide (CAS 251096-88-5)
- 3-((3,4-Dichlorobenzyl)thio)-N-(3,5-dichlorophenyl)thiophene-2-carboxamide (CAS 251096-87-4)
Recommended Standards
- Tris(4-nitrophenyl) phosphate (CAS 3871-20-3)
- 2-{[(3,4-dichlorophenyl)methyl]sulfanyl}-5-methoxy-4-[3-(trifluoromethyl)phenoxy]pyrimidine (CAS 339276-18-5)
- 9-(4-Bromobenzenesulfonyl)-13-nitro-2-oxa-9-azatricyclo[9.4.0.0^{3,8}]pentadeca-1(11),3,5,7,12,14-hexaene (CAS 866157-19-9)
- 320421-99-6 4-bromo-N'-methyl-N'-[2-(trifluoromethyl)-4-quinazolinyl]benzenesulfonohydrazide KS-0000314D (CAS 320421-99-6)
- 2-Docosahexaenoin-1-oleoyl 3-Phosphocholine (CAS 99296-82-9)
- Diisopropyl-(1H,1H,2H,2H-Perfluorooctyl)Silane (CAS 356056-14-9)
- 4-Chloro-6-(oxetan-3-yl)thieno[3,2-d]pyrimidine (CAS 2227205-57-2)
- (E)-2-Phenyl-4-(1-(p-tolyl)ethylidene)oxazol-5(4H)-one (CAS 57427-95-9)
- 5X9P91566R 544-01-4 Di-iso-amyl ether Isoamyl ether Butane, 1,1'-oxybis(3-methyl- Butane, 1,1'-oxylbis(3-methyl- Diisopentyl ether Isopentyl ether AI3-02268 Diisoamyl ether Di-3-methylbutyl ether EINECS 208-857-4 HSDB 2773 Isoamyl oxide NSC 9281 1,1'-Oxybis(3-methylbutane) 1,1'-Oxylbis(3-methylbutane) UNII-5X9P91566R EC 208-857-4 (CAS 544-01-4)
- 2,6-Dichloro-3,5-difluoropyridin-4-amine (CAS 1121583-29-6)
- (R)-2-chloro-6,7-dihydro-5H-cyclopenta[b]pyridin-7-amine (CAS 1336222-56-0)
- H-Ser-OBzl-HCI (CAS 60022-62-0)
- Dobutamine Impurity 10 (CAS CATO-C4X-129810)
- Peptide Impurity (CAS CATO-CPTD788810)
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