Methyl (S)-2-bromobutanoate CAS 114438-76-5
| CAS No. | 114438-76-5 |
| Molecular Formula | C5H9BrO2 |
| Molecular Weight | 181.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 181.03 g/mol gives Methyl (S)-2-bromobutanoate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Methyl (S)-2-bromobutanoate (CAS 114438-76-5), molecular formula C5H9BrO2 and molecular weight 181.03 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Methyl (S)-2-bromobutanoate (C5H9BrO2) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
CATO manufactures Methyl (S)-2-bromobutanoate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H9BrO2 |
| Molecular Weight | 181.03 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Br-containing |
Recommended Standards
- methyl (2R)-2-bromobutanoate (CAS 114438-75-4)
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- Methyl (R)-3-Bromo-2-methylpropanoate (CAS 110556-33-7)
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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