5,8-Dibromo-2,3-diphenylquinoxaline CAS 94544-77-1
| CAS No. | 94544-77-1 |
| Molecular Formula | C20H12Br2N2 |
| Molecular Weight | 440.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 440.13 g/mol gives 5,8-Dibromo-2,3-diphenylquinoxaline distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5,8-Dibromo-2,3-diphenylquinoxaline (CAS 94544-77-1), molecular formula C20H12Br2N2 and molecular weight 440.13 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 5,8-Dibromo-2,3-diphenylquinoxaline (C20H12Br2N2) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 manufactures 5,8-Dibromo-2,3-diphenylquinoxaline under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C20H12Br2N2 |
| Molecular Weight | 440.13 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Dibromo Standards
- 5,7-Dibromo-2,3-diphenylquinoxaline (CAS 313067-47-9)
- 7,7'-Dibromo-2,2',3,3'-tetrahydro-5,5'-bithieno[3,4-b][1,4]dioxine (CAS 287924-56-5)
- 4,4'-Dibromo-2,2'-dimethyl-1,1'-binaphthalene (CAS 797035-61-1)
- 4,4'-Dibromo-3,3'-dimethyl-1,1'-binaphthalene (CAS 74866-25-4)
- 4,7-Dibromo-2-(6-bromohexyl)-benzotriazole (CAS 890704-02-6)
- 1,2-Dibromo-1,2,3,3,3-pentafluoro-1-(2,2,3,3,3-pentafluoropropoxy)propane (CAS 396716-50-0)
- 3-(3,5-Dibromo-4-hydroxy-phenylimino)-5-nitro-1,3-dihydro-indol-2-one (CAS 1380572-55-3)
- 3,7-Dibromo-6-hydroxy-4-methoxy-N-phenylbenzofuran-5-carboxamide (CAS 1373132-53-6)
Recommended Standards
- 3,3,4,4,5,5,6,6,6-Nonafluorohexyl (2,2,3,3,3-pentafluoropropyl) carbonate (CAS 1980048-74-5)
- 8-(Allyloxy)-1,1,1,2,2,3,3,4,4,5,5,6,6,7,7-pentadecafluorooctane (CAS 812-72-6)
- 2,3-Bis(4-bromophenyl)quinoxaline (CAS 19802-70-1)
- L-Proline, 5-oxo-, iron complex (CAS 85994-36-1)
- 2-((2-(Quinolin-8-yl)hydrazono)methyl)quinolin-8-ol (CAS 24430-56-6)
- 2-Pyridine Selenyl Bromide (CAS 91491-61-1)
- 3-((2-methylbenzofuro[3,2-d]pyrimidin-4-yl)amino)propanoic acid 848728-92-7 F2117-0014 (CAS 848728-92-7)
- n-((1,2,3-Thiadiazol-4-yl)methyl)-3-methylaniline (CAS 1156893-27-4)
- Benzyl ((4-hydroxyazepan-4-yl)methyl)carbamate hydrochloride (CAS 1822460-56-9)
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- 3-(Propan-2-yl)-1h-pyrazole-4-sulfonamide (CAS 1248925-97-4)
- Insulin Degludec Impurity 15 (CAS CATO-C4X-215715)
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