Methyl 3-bromo-4-methyl-2-oxopentanoate CAS 57455-14-8
| CAS No. | 57455-14-8 |
| Molecular Formula | C7H11BrO3 |
| Molecular Weight | 223.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, Methyl 3-bromo-4-methyl-2-oxopentanoate is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 223.06 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Methyl 3-bromo-4-methyl-2-oxopentanoate (CAS 57455-14-8), molecular formula C7H11BrO3 and molecular weight 223.06 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C7H11BrO3 |
| Molecular Weight | 223.06 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.) | 1973 |
| Halogen Content | Br-containing |
Related Methyl Standards
- 2-Bromo-1-(5-fluorothiophen-2-yl)ethanone (CAS 1001014-28-3)
- ETHYL 3-BROMO-2-OXOPENTANOATE (CAS 113264-43-0)
- 1-(5-Bromo-3-fluorothiophen-2-yl)ethan-1-one (CAS 1403468-49-4)
- 3-Bromo-5-hydroxybenzoic acid (CAS 140472-69-1)
- 6-Bromo-1,4,8-trioxaspiro[4.5]decane (CAS 1423031-10-0)
- Ethyl 5-bromo-4-oxopentanoate (CAS 14594-25-3)
- 6-Bromo-1,4-dioxaspiro[4.4]Nonan-7-ol (CAS 159888-54-7)
- Methyl 2-bromo-2-(1-hydroxycyclobutyl)acetate (CAS 1849210-81-6)
Recommended Standards
- Methyl (1s,3s)-3-(bromomethyl)-3-hydroxycyclobutane-1-carboxylate (CAS 578715-77-2)
- Methyl 4-bromo-2,2-dimethyl-3-oxobutanoate (CAS 84691-57-6)
- Methyl (1r,3r)-3-(bromomethyl)-3-hydroxycyclobutane-1-carboxylate (CAS 578715-76-1)
- Methyl 6-bromo-5-oxohexanoate (CAS 68192-98-3)
- 1-(2,3-Dihydro-1,4-benzodioxin-6-yl)cyclopentan-1-amine hydrochloride (CAS 1052550-95-4)
- N-[1-(pyridin-2-yl)ethyl]formamide (CAS 854701-06-7)
- (r)-2-Amino-2-(2-chloro-5-methylphenyl)ethan-1-ol (CAS 1213065-31-6)
- Arsenosiloxane II (CAS 18817-07-7)
- 4-(5-Chloro-[1,2,4]thiadiazol-3-yl)-piperazine-1-carboxylic acid tert-butyl ester (CAS 887623-94-1)
- 4-Aminopiperidine-4-carboxylic acid hydrochloride (CAS 76508-72-0)
- YM-26734 (CAS 144337-18-8)
- (R)-2-Trifluoromethyl-piperazine dihydrochloride (CAS 1427203-56-2)
- 2,2,2-Trichloroethyl acrylate (CAS 44925-09-9)
- Semaglutide Impurity 129 (CAS 2490269-79-7)
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