5-Bromo-1,4-dihydro-1,4-epoxynaphthalene CAS 136131-50-5
| CAS No. | 136131-50-5 |
| Molecular Formula | C10H7BrO |
| Molecular Weight | 223.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, 5-Bromo-1,4-dihydro-1,4-epoxynaphthalene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 223.07 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
5-Bromo-1,4-dihydro-1,4-epoxynaphthalene (CAS 136131-50-5), molecular formula C10H7BrO and molecular weight 223.07 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5-Bromo-1,4-dihydro-1,4-epoxynaphthalene 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 | C10H7BrO |
| Molecular Weight | 223.07 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Br-containing |
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- Indobufen Impurity 49 (CAS CATO-C4X-179249)
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- 4-Fluoro-1'-methyl-1,4'-bipiperidine (CAS 1956331-39-7)
- N-(1,3-Benzodioxol-5-ylmethyl)-2-(1H-indol-3-yl)ethanamine (CAS 51918-89-9)
- Ethyl 1-(2-methoxyphenyl)-5-methyl-1H-pyrazole-4-carboxylate (CAS 241798-35-6)
- Ac-(5-31)Semaglutide (CAS CATO-C4X-2226279)
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