2-(4-bromo-2-chlorophenyl)-2-methyloxirane CAS 1557729-73-3
| CAS No. | 1557729-73-3 |
| Molecular Formula | C9H8BrClO |
| Molecular Weight | 247.52 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2-(4-bromo-2-chlorophenyl)-2-methyloxirane 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.
2-(4-bromo-2-chlorophenyl)-2-methyloxirane (CAS 1557729-73-3) is a high-purity analytical reference standard with the molecular formula C9H8BrClO and a molecular weight of 247.52 g/mol.
Based on its molecular formula C9H8BrClO, 2-(4-bromo-2-chlorophenyl)-2-methyloxirane contains a hydroxyl group, an ether linkage, chlorine/bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 247.52 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.
Physical & Chemical Properties
| Molecular Formula | C9H8BrClO |
| Molecular Weight | 247.52 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | Cl/Br-containing |
Related bromo Standards
- (5-Bromo-2-methylphenyl)acetyl chloride (CAS 1031387-31-1)
- 1-Bromo-3-(4-chlorophenyl)propan-2-one (CAS 103557-35-3)
- 5-Bromo-4-chloro-6-cyclopropyl-2-methylpyrimidine (CAS 1044768-56-0)
- 1-Bromo-3-(3-chlorophenyl)propan-2-one (CAS 1200399-50-3)
- 4-Bromo-1-chloro-2-cyclopropoxybenzene (CAS 1201196-54-4)
- 1-(3-Bromo-5-chlorophenyl)propan-2-one (CAS 1204241-09-7)
- 3-Bromo-2-chloro-5,6,7,8-tetrahydro-1,6-naphthyridine (CAS 1211520-95-4)
- 1-Bromo-4-chloro-2-cyclopropoxybenzene (CAS 1243326-65-9)
Recommended Standards
- 1-(5-Bromo-2-chlorophenyl)propan-2-one (CAS 1525469-49-1)
- 3-(2-Bromo-5-chlorophenyl)prop-2-en-1-ol (CAS 1562299-97-1)
- 5-Bromo-4-chloro-2-cyclopropyl-6-methylpyrimidine (CAS 1523812-11-4)
- 1-(4-bromo-2-chlorophenyl)propan-1-one (CAS 166525-97-9)
- 1-(2-Methoxyethyl)-1H-1,2,4-triazole-5-carbaldehyde (CAS 111340-49-9)
- Ethyl 3-(3-chloro-4-fluorophenoxy)propanoate (CAS 1099681-71-6)
- 2-((5-Acetamido-1,3,4-thiadiazol-2-yl)thio)-N-(4-methylthiazol-2-yl)acetamide (CAS 893156-74-6)
- 2-Propoxyquinoline-4-carbonitrile (CAS 855165-17-2)
- 2-Methyl-1,4,5,6-tetrahydropyrimidine (CAS 4271-95-8)
- cis-3a,6a-Bis(trifluoromethyl)octahydropyrrolo[3,4-c]pyrrole (CAS 2167310-50-9)
- Ethyl 4-((3-fluorobenzyl)amino)butanoate (CAS 1458589-65-5)
- 3-(N-(1,3-Dimethyl-2-oxo-6-(3-propoxyphenoxy)-2,3-dihydro-1H-benzo[d]imidazol-5-yl)sulfamoyl)benzoic acid (CAS 1884199-58-9)
- (2S,3S,4aR,8R,8aR)-Octahydro-2,3-dimethoxy-2,3-dimethyl-1,4-dioxino[2,3-c]pyridine-8-methanol (CAS 1084896-52-5)
- [3-31]-Semaglutide D (CAS C152H230N42O47)
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