1-Bromo-3-chloro-5-methyl-2-nitrobenzene CAS 89642-19-3
| CAS No. | 89642-19-3 |
| Molecular Formula | C7H5BrClNO2 |
| Molecular Weight | 250.48 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.
1-Bromo-3-chloro-5-methyl-2-nitrobenzene (CAS 89642-19-3) is a high-purity analytical reference standard with the molecular formula C7H5BrClNO2 and a molecular weight of 250.48 g/mol.
1-Bromo-3-chloro-5-methyl-2-nitrobenzene (C7H5BrClNO2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, 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-Bromo-3-chloro-5-methyl-2-nitrobenzene 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 | C7H5BrClNO2 |
| Molecular Weight | 250.48 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 1 |
Related Bromo Standards
- 1-Bromo-4-chloro-2-methyl-5-nitrobenzene (CAS 10289-13-1)
- Methyl 4-bromo-2-chloronicotinate (CAS 1064678-14-3)
- 1-Bromo-2-chloro-4-methyl-5-nitrobenzene (CAS 1126367-34-7)
- 1-Bromo-2-(chloromethyl)-4-nitrobenzene (CAS 1134559-00-4)
- 1-Bromo-4-chloro-3-methyl-2-nitrobenzene (CAS 1160573-48-7)
- 1-Bromo-4-chloro-5-methyl-2-nitrobenzene (CAS 1160573-61-4)
- 5-Bromo-2-chloro-1-methyl-3-nitrobenzene (CAS 1160573-73-8)
- 1-Bromo-2-chloro-3-methyl-5-nitrobenzene (CAS 116277-60-2)
Recommended Standards
- 1-Bromo-2-chloro-5-methyl-3-nitrobenzene (CAS 89642-18-2)
- 1-Bromo-5-chloro-2-methyl-4-nitrobenzene (CAS 40371-64-0)
- 1-(Bromomethyl)-4-chloro-2-nitrobenzene (CAS 52311-59-8)
- 1-Bromo-5-chloro-3-methyl-2-nitrobenzene (CAS 866998-75-6)
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