2-Hydroxy-2-(hydroxymethyl)-3,3-dimethylcyclopropyl 2-bromo-2-methylpropanoate CAS 258532-05-7
| CAS No. | 258532-05-7 |
| Molecular Formula | C10H17BrO4 |
| Molecular Weight | 281.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Hydroxy-2-(hydroxymethyl)-3,3-dimethylcyclopropyl 2-bromo-2-methylpropanoate (CAS 258532-05-7) is a high-purity analytical reference standard with the molecular formula C10H17BrO4 and a molecular weight of 281.14 g/mol.
Based on its molecular formula C10H17BrO4, 2-Hydroxy-2-(hydroxymethyl)-3,3-dimethylcyclopropyl 2-bromo-2-methylpropanoate contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 281.14 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C10H17BrO4 |
| Molecular Weight | 281.14 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 |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Br-containing |
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- tert-Butyl (2-(2-(methylamino)ethoxy)ethyl)carbamate (CAS 1185772-28-4)
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- 6-Hydrazinyl-n,n-bis(propan-2-yl)pyridine-3-sulfonamide (CAS 627838-41-9)
- 4-Chloro-2-(pyridin-3-yl)-6-(trifluoromethyl)pyrimidine (CAS 204394-69-4)
- Semaglutide impurity 65 (CAS CATO-C4X-222665)
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