2-Bromo-3-ethoxy-2-cyclopentenone CAS 226703-16-8
| CAS No. | 226703-16-8 |
| Molecular Formula | C7H9BrO2 |
| Molecular Weight | 205.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 2-Bromo-3-ethoxy-2-cyclopentenone (CAS 226703-16-8), a certified reference material (molecular formula C7H9BrO2, MW 205.05 g/mol) for analytical method development and quality control.
Based on its molecular formula C7H9BrO2, 2-Bromo-3-ethoxy-2-cyclopentenone contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 205.05 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.
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 | 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.) | 2021 |
| 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
- 2-Bromo-1-cyclohexenecarboxylic Acid (CAS 68965-62-8)
- 2-Bromo-3-methoxycyclohex-2-en-1-one (CAS 85493-96-5)
- 2-Bromo-1-(ethoxymethyl)-1H-imidazole (CAS 850429-54-8)
- 3-(2-Bromoethoxy)cyclopent-2-enone (CAS 42858-97-9)
- N-(3-Methylisothiazol-5-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzamide (CAS 864754-51-8)
- 89793-11-3 A19277 Methyl2-chloro-6-methylpyrimidine-4-carboxylate methyl 2-chloro-6-methylpyrimidine-4-carboxylate (CAS 89793-11-3)
- 1-(4-Bromophenyl)-1h-pyrazol-3-amine (CAS 66000-38-2)
- tert-butyl 4-amino-11-azatricyclo[6.2.1.0^{2,7}]undeca-2(7),3,5-triene-11-carboxylate (CAS 942492-11-7)
- 1,3-Dioxo-2-(p-tolyl)isoindoline-5-carbonyl chloride (CAS 1134335-00-4)
- Alfacalcidol-d6 (CAS 1641940-94-4)
- (2-Methylbenzo[d]thiazol-5-yl)methanamine (CAS 903630-23-9)
- 1-Phenyl-2-(thietan-3-ylamino)ethan-1-ol (CAS 1860315-53-2)
- (S)-tert-Butyl (1-hydroxy-4-(methylthio)butan-2-yl)carbamate (CAS 51372-93-1)
- Tirzepatide Impurity 37 (CAS CATO-C4X-324037)
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