Methyl 3-bromo-4-oxocyclopentane-1-carboxylate CAS 1004764-65-1
| CAS No. | 1004764-65-1 |
| Molecular Formula | C7H9BrO3 |
| Molecular Weight | 221.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 221.05 g/mol gives Methyl 3-bromo-4-oxocyclopentane-1-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Methyl 3-bromo-4-oxocyclopentane-1-carboxylate (CAS 1004764-65-1), molecular formula C7H9BrO3 and molecular weight 221.05 g/mol, is a CATO reference standard with documented purity and traceability.
Methyl 3-bromo-4-oxocyclopentane-1-carboxylate (C7H9BrO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C7H9BrO3 |
| Molecular Weight | 221.05 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | Br-containing |
Related Methyl Standards
- 7-Bromo-1H-indole-3-carbonitrile (CAS 1043601-50-8)
- 3-Bromo-4-cyanoindole (CAS 1186663-64-8)
- 7-Bromo-1H-indole-5-carbonitrile (CAS 1196051-75-8)
- 4-Bromo-5-methylphthalonitrile (CAS 1234790-18-1)
- 7-Bromo-1H-indole-4-carbonitrile (CAS 1258959-58-8)
- 2-Bromo-6-(cyanomethyl)benzonitrile (CAS 1261613-07-3)
- 3-Bromo-6-cyanoindole (CAS 1326714-80-0)
- 3-Bromo-1H-indole-2-carbonitrile (CAS 1373348-93-6)
Recommended Standards
- 3,4-D (CAS 588-22-7)
- 2,3-D (CAS 2976-74-1)
- methyl 1-(2-bromoacetyl)cyclopropane-1-carboxylate (CAS 1184913-42-5)
- Dicamba (CAS 1918-00-9)
- 1-(3-Chlorophenyl)-2-methylprop-2-en-1-one (CAS 1193779-94-0)
- 2-(Difluoromethoxy)-1,3-difluoro-4-methyl-benzene (CAS 1404194-82-6)
- Olaparib Monohydrate (CAS 2093369-28-7)
- 3-(benzyloxy)-2-methylpropan-1-amine hydrochloride (CAS 1197466-21-9)
- [(3,4-Dimethoxyphenyl)methyl](propyl)amine (CAS 807342-83-2)
- 5-(Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-benzofuran-2-carboxylic acid (CAS 2377609-29-3)
- 5-Bromopyrazine-2-carboxamide (CAS 36070-84-5)
- 1-(1h-Imidazol-1-yl)-3,3-dimethylbutan-2-amine (CAS 845290-87-1)
- 4-(3-Fluorobenzyl)-6,7-dimethoxyisoquinoline (CAS 61190-19-0)
- D-[Phe6]-Semaglutide (CAS CATO-C4X-2226213)
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