2,3-Dibromopentanoic acid CAS 139185-84-5
| CAS No. | 139185-84-5 |
| Molecular Formula | C5H8Br2O2 |
| Molecular Weight | 259.92 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 259.92 g/mol gives 2,3-Dibromopentanoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2,3-Dibromopentanoic acid (CAS 139185-84-5), molecular formula C5H8Br2O2 and molecular weight 259.92 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, 2,3-Dibromopentanoic acid is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 259.92 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.
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 | C5H8Br2O2 |
| Molecular Weight | 259.92 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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.) | 1996 |
| Halogen Content | Br-containing |
Related Dibromopentanoic Standards
Recommended Standards
- Ixazomib Impurity 66 (CAS 50-38-4)
- Ixazomib Impurity 65 (CAS 50-74-8)
- 2,2-Bis(bromomethyl)-1,3-dioxolane (CAS 20599-01-3)
- 5-Fluoro-2-(trimethylstannyl)pyridine (CAS 453568-60-0)
- Methyltetrazine-NHS ester (CAS 1644644-96-1)
- Gibberellin A63 (CAS 63351-80-4)
- 1-(2-Methoxy-3-nitrophenyl)ethan-1-one (CAS 85276-73-9)
- SynaptoRed<SUP>™</SUP> C2 (CAS 162112-35-8)
- 6-Bromo-4-methoxypyrazolo[1,5-a]pyridine-3-carboxaldehyde (CAS 1207839-91-5)
- 4-Ethyl-2,3,5-trimethylpyridine 1-oxide (CAS 1015056-80-0)
- Gentamicin C1 (CAS 25876-10-2)
- 862095-91-8 2-(Pentafluorophenyl)-2,5,6,7-tetrahydropyrrolo[2,1-c][1,2,4]triazol-4-ium tetrafluoroborate DTXSID90457105 (CAS 862095-91-8)
- Methyl 1-benzyl-2-{(1S)-1-[(tert-butoxycarbonyl)amino]-2-phenylethyl}-5-methyl-1H-imidazole-4-carboxylate (CAS 1418114-07-4)
- Liraglutide Impurity 25 (CAS CATO-C4X-199225)
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