2-Bromo-3-chloro-4-fluoro-1-methoxybenzene CAS 1881321-24-9
| CAS No. | 1881321-24-9 |
| Molecular Formula | C7H5BrClFO |
| Molecular Weight | 239.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-Bromo-3-chloro-4-fluoro-1-methoxybenzene.
2-Bromo-3-chloro-4-fluoro-1-methoxybenzene (CAS 1881321-24-9), molecular formula C7H5BrClFO and molecular weight 239.47 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H5BrClFO, 2-Bromo-3-chloro-4-fluoro-1-methoxybenzene contains a hydroxyl group, an ether linkage, fluorine/chlorine/bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 239.47 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C7H5BrClFO |
| Molecular Weight | 239.47 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | F/Cl/Br-containing |
Related Bromo Standards
- (2-Bromo-4-chloro-5-fluorophenyl)methanol (CAS 1067882-62-5)
- 2-Bromo-4-chloro-1-fluoro-3-methoxybenzene (CAS 1208074-84-3)
- 5-Bromo-2-chloro-1-fluoro-3-methoxybenzene (CAS 1261216-28-7)
- 4-Bromo-2-chloro-5-fluorobenzyl alcohol (CAS 1338254-21-9)
- 1-Bromo-4-chloro-3-fluoro-2-methoxybenzene (CAS 1414870-75-9)
- (2-Bromo-4-chloro-6-fluorophenyl)methanol (CAS 1449008-26-7)
- (6-Bromo-3-chloro-2-fluorophenyl)methanol (CAS 1449008-28-9)
- 1-Bromo-4-chloro-2-fluoro-5-methoxybenzene (CAS 146447-18-9)
Recommended Standards
- (2-Bromo-4-chloro-3-fluorophenyl)methanol (CAS 1834596-59-6)
- (4-Bromo-2-chloro-3-fluorophenyl)methanol (CAS 1891698-71-7)
- 3-Bromo-4-chloro-2-fluorobenzyl Alcohol (CAS 1824057-69-3)
- (3-Bromo-2-chloro-5-fluorophenyl)methanol (CAS 2090980-95-1)
- 6-Bromoimidazo[1,2-a]pyridine-7-carbonitrile (CAS 952206-30-3)
- 2-(2,6-Dimethylmorpholin-4-yl)propanoic acid hydrochloride (CAS 1214158-74-3)
- 3-(2,2,2-Trifluoroethoxy)-5-(trifluoromethyl)-pyridine-2-carboxylic acid (CAS 1924322-37-1)
- H-Thr-NH2 · HCl (CAS 33209-01-7)
- Boc-Aminoxy-PEG4-OH (CAS 918132-14-6)
- 2-Chloro-3-fluorobenzamide (CAS 683274-49-9)
- 4-Chloro-2-(4-fluorophenyl)thiazole-5-carbaldehyde (CAS 499796-86-0)
- 5-Chloro-8-methoxyquinoline (CAS 17012-44-1)
- 2-Methyl-5-(piperidin-1-yl)oxazole (CAS 144760-77-0)
- β-Asp9-Tirzepatide (CAS CATO-CPTD788931)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com