6,7-Dichloro-3-methyl-3,4-dihydroquinoxalin-2(1H)-one CAS 73148-15-9
| CAS No. | 73148-15-9 |
| Molecular Formula | C9H8Cl2N2O |
| Molecular Weight | 231.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 231.08 g/mol gives 6,7-Dichloro-3-methyl-3,4-dihydroquinoxalin-2(1H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 6,7-Dichloro-3-methyl-3,4-dihydroquinoxalin-2(1H)-one (CAS 73148-15-9), a certified reference material (molecular formula C9H8Cl2N2O, MW 231.08 g/mol) for analytical method development and quality control.
6,7-Dichloro-3-methyl-3,4-dihydroquinoxalin-2(1H)-one (C9H8Cl2N2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), 6,7-Dichloro-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 | C9H8Cl2N2O |
| Molecular Weight | 231.08 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-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 DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
- 5,7-Dichloro-3-isopropyl-1H-pyrazolo[4,3-d]pyrimidine (CAS 607729-11-3)
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- 4-Bromo-7-fluorobenzo[b]thiophene (CAS 360576-07-4)
- 7-Bromo-4-fluorobenzo[b]thiophene (CAS 324768-96-9)
- Bis(4-(trifluoromethyl)phenyl)amine (CAS 7639-71-6)
- 6-Bromo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine (CAS 959992-62-2)
- 5-chloro-2-ethyl-1,6-naphthyridine (CAS 2528154-94-9)
- 4-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-N-(3-(trifluoromethyl)phenyl)piperazine-1-carboxamide (CAS 856189-81-6)
- 4-(Benzyloxy)-1H-pyrazolo[3,4-b]pyridine (CAS 119368-04-6)
- (3-Ethynylphenyl)methanol (CAS 10602-07-0)
- N-(3-cyano-5,6-dihydro-4H-cyclopenta[b]thiophen-2-yl)-2-((5-cyano-[2,3'-bipyridin]-6-yl)thio)acetamide (CAS 497077-96-0)
- 3-Bromo-5-nitro-1-trityl-1H-indazole (CAS 942189-39-1)
- 2-Cyclopropyloxazole-5-carboxylic acid (CAS 1263378-39-7)
- Characteristic MSH-Tetrapeptide (CAS 4289-02-5)
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