3-Bromo-2-nitrophenol CAS 76361-99-4
| CAS No. | 76361-99-4 |
| Molecular Formula | C6H4BrNO3 |
| Molecular Weight | 218.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3-Bromo-2-nitrophenol (CAS 76361-99-4), a certified reference material (molecular formula C6H4BrNO3, MW 218.00 g/mol) for analytical method development and quality control.
3-Bromo-2-nitrophenol (C6H4BrNO3) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. It is notably hygroscopic, 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.
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), 3-Bromo-2-nitrophenol 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 | C6H4BrNO3 |
| Molecular Weight | 218.00 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; 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.) | 1978 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Bromo Standards
- 2-Bromo-3-nitrophenol (CAS 101935-40-4)
- 5-Bromo-2-hydroxynicotinic Acid (CAS 104612-36-4)
- 5-Bromo-4-hydroxynicotinic Acid (CAS 1052114-83-6)
- 5-Bromo-2,3-difluorobenzonitrile (CAS 1105665-42-6)
- 2-Bromo-4-hydroxynicotinic acid (CAS 1150561-81-1)
- 5-Bromo-3-hydroxypicolinic acid (CAS 1160994-90-0)
- 3-Bromo-5-nitrophenol (CAS 116632-23-6)
- 2-Bromo-3-hydroxyisonicotinic acid (CAS 1196152-10-9)
Recommended Standards
- 3-Bromo-2,4-difluoro-benzonitrile (CAS 935534-48-8)
- 3-Bromo-4-nitrophenol (CAS 5470-65-5)
- 2-Bromo-5-nitrophenol (CAS 52427-05-1)
- 4,6-Dichloro-5-nitronicotinonitrile (CAS 89247-08-5)
- 3-(Aminomethyl)-5-(cyclohexylmethyl)phenol (CAS 1243372-01-1)
- Ethyl (2-(4-chlorobenzoyl)hydrazine-1-carbonyl)glycinate (CAS 1228650-21-2)
- Methyl 2-bromo-3-cyano-4-fluorobenzoate (CAS 1807076-83-0)
- 8-Oxa-2-azaspiro[4.5]Decan-1-one (CAS 1555334-83-2)
- 3-Cyclopropoxy-N2,N2-dimethylpyridine-2,4-diamine (CAS 1243479-28-8)
- 1-(2-Chloropropanoyl)-4-(2-fluorophenyl)piperazine (CAS 928707-62-4)
- 1-(2-Fluorophenyl)-1h,4h,5h-pyrazolo[3,4-d]pyrimidin-4-one (CAS 630107-82-3)
- N-(furan-2-ylmethyl)cyclobutanecarboxamide (CAS 33582-92-2)
- 7-Chloro-2-(trifluoromethyl)quinoline-4-carboxylic acid (CAS 62482-35-3)
- Semaglutide impurity 68 (CAS CATO-C4X-222668)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com