4-Bromo-6-oxabicyclo[3.2.1]Octan-7-one CAS 90084-76-7
| CAS No. | 90084-76-7 |
| Molecular Formula | C7H9BrO2 |
| Molecular Weight | 205.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Bromo-6-oxabicyclo[3.2.1]Octan-7-one (CAS 90084-76-7), molecular formula C7H9BrO2 and molecular weight 205.05 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, 4-Bromo-6-oxabicyclo[3.2.1]Octan-7-one is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 205.05 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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), 4-Bromo-6-oxabicyclo[3.2.1]Octan-7-one 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 | C7H9BrO2 |
| Molecular Weight | 205.05 g/mol |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Br-containing |
Related Bromo Standards
- (4-Bromo-1,5-dimethyl-1H-pyrazol-3-yl)methanol (CAS 1073067-93-2)
- 2-Bromo-N-(2-cyanoethyl)-N-methylacetamide (CAS 1211471-52-1)
- 4-Bromo-3-(methoxymethyl)-5-methyl-1H-pyrazole (CAS 1287752-78-6)
- (4-Bromo-1-ethyl-1h-pyrazol-3-yl)methanol (CAS 1310379-30-6)
- (4-Bromo-1-ethyl-1H-pyrazol-5-yl)methanol (CAS 1310379-45-3)
- (4-Bromo-1,3-dimethyl-1H-pyrazol-5-yl)methanol, 97% (CAS 1374868-77-5)
- 3-Bromo-1-(2-methoxyethyl)-1H-pyrazole (CAS 1427012-33-6)
- 1-Bromo-3,5-diethynylbenzene (CAS 144001-08-1)
Recommended Standards
- 4-Bromo-5-ethoxy-3-methyl-1h-pyrazole (CAS 337915-60-3)
- 4-bromobicyclo[2.1.1]hexane-1-carboxylic acid (CAS 2090553-35-6)
- 4-Bromo-1-(3-hydroxypropyl)pyrazole (CAS 925180-06-9)
- 4-Bromocyclohex-3-ene-1-carboxylic acid (CAS 854722-22-8)
- 4-(4-Chlorobenzoyl)-5-(4-chlorophenyl)-3-hydroxy-1-(6-methoxybenzo[d]thiazol-2-yl)-1H-pyrrol-2(5H)-one (CAS 477333-51-0)
- 1-[3-(Benzyloxy)phenyl]-4-methanesulfonylbenzene (CAS 1345472-18-5)
- 4-Chloro-2-(Chloromethyl)-1-Methoxybenzene (CAS 7035-11-2)
- 2-{[methyl(pyrrolidin-3-yl)amino]methyl}pyrimidin-4-amine (CAS 1702716-18-4)
- 8-Methoxy-2-naphthonitrile (CAS 590369-72-5)
- 2-Butyl-4-(difluoromethyl)pyrimidine-5-carboxylic acid (CAS 1522584-28-6)
- N-Benzoyl-N-phenylpiperidine-1-carboxamide (CAS 391861-28-2)
- 2-Methyl-3-(2-methyl-1,3-dioxolan-2-yl)propan-1-amine (CAS 1334146-55-2)
- 2-(Morpholine-4-sulfonyl)benzonitrile (CAS 612045-76-8)
- Semaglutide impurity 22(OtBu-Ste-γGlu(OtBu)-AEEA-AEEA-OH) (CAS 1118767-16-0)
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