methyl (2R)-2-(4-bromopyrazol-1-yl)propanoate CAS 877399-68-3
| CAS No. | 877399-68-3 |
| Molecular Formula | C7H9BrN2O2 |
| Molecular Weight | 233.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
methyl (2R)-2-(4-bromopyrazol-1-yl)propanoate (C7H9BrN2O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies methyl (2R)-2-(4-bromopyrazol-1-yl)propanoate (CAS 877399-68-3), a certified reference material (molecular formula C7H9BrN2O2, MW 233.06 g/mol) for analytical method development and quality control.
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.
As a certified reference material (CRM), methyl (2R)-2-(4-bromopyrazol-1-yl)propanoate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C7H9BrN2O2 |
| Molecular Weight | 233.06 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Recommended Standards
- Ethyl 5-bromo-3-methyl-1H-pyrazole-4-carboxylate (CAS 2510868-39-8)
- Methyl 2-(4-bromo-1-methyl-1H-pyrazol-3-yl)acetate (CAS 2091858-06-7)
- Ethyl 5-bromo-1-methyl-1H-imidazole-2-carboxylate (CAS 865798-15-8)
- Methyl 2-bromo-1-ethyl-1H-imidazole-4-carboxylate (CAS 2002252-10-8)
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