2-Bromo-3-fluoropropionic acid CAS 39621-37-9
| CAS No. | 39621-37-9 |
| Molecular Formula | C3H4BrFO2 |
| Molecular Weight | 170.97 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 170.97 g/mol gives 2-Bromo-3-fluoropropionic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-Bromo-3-fluoropropionic acid (CAS 39621-37-9) is a high-purity analytical reference standard with the molecular formula C3H4BrFO2 and a molecular weight of 170.97 g/mol.
The molecular framework of 2-Bromo-3-fluoropropionic acid (C3H4BrFO2) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/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.
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 | C3H4BrFO2 |
| Molecular Weight | 170.97 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.) | 1968 |
| Halogen Content | F/Br-containing |
Related Bromo Standards
- 2-Bromo-2-fluoropropanoic acid (CAS 132629-22-2)
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Recommended Standards
- (2R)-2-(bromomethyl)-1,1-difluorocyclopropane (CAS 1290140-59-8)
- (2S)-2-(bromomethyl)-1,1-difluorocyclopropane (CAS 1290140-60-1)
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- 2,3-Dibromopyridine (CAS 13534-89-9)
- Brivudine Impurity 4 (CAS CATO-C4X-27584)
- (1-(5-Fluoropyrimidin-2-yl)piperidin-4-yl)methanamine hydrochloride (CAS 1261231-09-7)
- tert-Butyl 4-allyl-4-(allyloxy)piperidine-1-carboxylate (CAS 374795-39-8)
- Crisaborole Impurity 137 (CAS CATO-C4X-2021137)
- Semaglutide Impurity 129 (CAS 2490269-79-7)
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