2-[(E)-2-[(4-Bromophenyl)methylidene]hydrazin-1-yl]-3-methylquinoxaline CAS 463368-04-9
| CAS No. | 463368-04-9 |
| Molecular Formula | C16H13BrN4 |
| Molecular Weight | 341.21 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.
2-[(E)-2-[(4-Bromophenyl)methylidene]hydrazin-1-yl]-3-methylquinoxaline (CAS 463368-04-9), molecular formula C16H13BrN4 and molecular weight 341.21 g/mol, is a CATO reference standard with documented purity and traceability.
2-[(E)-2-[(4-Bromophenyl)methylidene]hydrazin-1-yl]-3-methylquinoxaline (C16H13BrN4) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; 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.
As a certified reference material (CRM), 2-[(E)-2-[(4-Bromophenyl)methylidene]hydrazin-1-yl]-3-methylquinoxaline 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 | C16H13BrN4 |
| Molecular Weight | 341.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 4 |
Related E Standards
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- 3-(4-Bromophenyl)-1-methyl-5-phenylpyridazin-4(1H)-one (CAS 59591-36-5)
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Recommended Standards
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- 1-(4-(1H-1,2,4-triazol-1-yl)phenyl)-N-(4-bromo-3-methylphenyl)methanimine (CAS 866157-59-7)
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- 2-Fluoro-6-(trifluoromethyl)phenol (CAS 239135-50-3)
- 2-Methoxybenzo[d][1,3,2]dioxaborole (CAS 72035-41-7)
- Carvedilol Impurity 27 (CAS 1059573-38-4)
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