Methyl 5-Bromo-4-oxopentanoate CAS 53856-93-2
| CAS No. | 53856-93-2 |
| Molecular Formula | C6H9BrO3 |
| Molecular Weight | 209.04 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 209.04 g/mol gives Methyl 5-Bromo-4-oxopentanoate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Methyl 5-Bromo-4-oxopentanoate (CAS 53856-93-2) is a high-purity analytical reference standard with the molecular formula C6H9BrO3 and a molecular weight of 209.04 g/mol.
Methyl 5-Bromo-4-oxopentanoate (C6H9BrO3) 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
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 | C6H9BrO3 |
| Molecular Weight | 209.04 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 | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1972 |
| Halogen Content | Br-containing |
Related Methyl Standards
- Methyl 4-Bromo-3-oxopentanoate (CAS 105983-77-5)
- methyl 5-bromo-1H-imidazole-4-carboxylate (CAS 1093261-46-1)
- 5-bromo-1-methyl-1H-pyrazole-3-carboxylic acid (CAS 1222174-93-7)
- Methyl 3-bromo-2-oxopentanoate (CAS 137267-36-8)
- methyl 4-bromo-1H-imidazole-2-carboxylate (CAS 1622843-37-1)
- 3-bromo-1-methyl-1H-pyrazole-5-carboxylic acid (CAS 173841-05-9)
- 4-Bromo-2,6-naphthyridine (CAS 1782910-98-8)
- 3-Bromo-1,6-naphthyridine (CAS 17965-73-0)
Recommended Standards
- Methyl 5-bromo-2-oxopentanoate (CAS 62691-70-7)
- Crizotinib impurity 16 (CAS 877397-65-4)
- Methyl 3-bromo-4-oxopentanoate (CAS 95678-51-6)
- Crizotinib Impurity 5 (CAS 330156-50-8)
- 5-Chloro-2-iodobenzo[d]oxazole (CAS 1644090-47-0)
- 1-(Imidazo[1,2-a]pyridin-3-yl)propan-2-amine dihydrochloride (CAS 2097936-93-9)
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- 3-(1,3-Dioxolan-2-yl)-4-methylbenzophenone (CAS 898778-85-3)
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- (Z)-7-Methoxy-8-(3-methylbuta-1,3-dien-1-yl)-2H-chromen-2-one (CAS 109741-40-4)
- Fragment-[3-31]-Liraglutide (CAS CATO-C4X-199232)
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