7-bromo-8-fluoro-3-methyl-3,4-dihydro-1H-quinoxalin-2-one CAS 2756334-24-2
| CAS No. | 2756334-24-2 |
| Molecular Formula | C9H14BrFN2O |
| Molecular Weight | 265.12 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 7-bromo-8-fluoro-3-methyl-3,4-dihydro-1H-quinoxalin-2-one (CAS 2756334-24-2), a certified reference material (molecular formula C9H14BrFN2O, MW 265.12 g/mol) for analytical method development and quality control.
Owing to an amide group, a hydroxyl group, an ether linkage, fluorine/bromine substitution, 7-bromo-8-fluoro-3-methyl-3,4-dihydro-1H-quinoxalin-2-one is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 265.12 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C9H14BrFN2O |
| Molecular Weight | 265.12 g/mol |
| Appearance | 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2002 |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 2 |
Related bromo Standards
- 4-Bromo-2-methoxy-1-(methylsulfonyl)benzene (CAS 1095544-87-8)
- Methyl 4-bromo-3-methoxy-5-methyl-2-thiophenecarboxylate (CAS 123342-03-0)
- (3-Bromo-5-(methylsulfonyl)phenyl)methanol (CAS 1338796-07-8)
- 4'-Bromo-3-fluoro-4-methyl-1,1'-biphenyl (CAS 1443312-45-5)
- 3'-Bromo-3-fluoro-2-methyl-1,1'-biphenyl (CAS 1443313-42-5)
- 3'-Bromo-4-fluoro-2-methyl-1,1'-biphenyl (CAS 1443314-36-0)
- 4'-Bromo-4-fluoro-2-methyl-1,1'-biphenyl (CAS 1443325-28-7)
- 4'-Bromo-5-fluoro-2-methyl-1,1'-biphenyl (CAS 1443325-46-9)
Recommended Standards
- 4-Bromo-2-methanesulfonyl-1-methoxybenzene (CAS 90531-99-0)
- Ethyl 2-bromobenzenesulfonate (CAS 99769-29-6)
- 4-(2-Bromoethyl)benzenesulfonic acid (CAS 54322-31-5)
- Flunarizine Impurity 15 (CAS 365-20-8)
- 2-(2,3-Difluorophenyl)amino-4-(3-fluorophenyl)thiazole (CAS 887267-09-6)
- Boc-Dap-OtBu (CAS 77215-54-4)
- 2,3,4,5-Tetrafluorobenzonitrile (CAS 16582-93-7)
- Bisantrene (CAS 71439-68-4)
- 2-(4-Bromo-1-methyl-1H-imidazol-2-yl)propan-2-ol (CAS 2639836-54-5)
- N-(5-Amino-2-methoxyphenyl)-2-(3-methylphenoxy)-propanamide (CAS 1020054-80-1)
- N-(3-chlorophenyl)-2-((4-phenyl-5-(pyridin-3-yl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 332385-34-9)
- 3-Nitro-4-((3-(trifluoromethyl)benzyl)thio)benzaldehyde (CAS 885950-56-1)
- 9-(Trimethylsilyl)-9H-carbazole (CAS 74367-40-1)
- Semaglutide impurity 202 (CAS CATO-C4X-2226202)
Why CATO?
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