(R)-4-bromo-1-(pyrrolidin-3-yl)-1H-pyrazole CAS 1428331-33-2
| CAS No. | 1428331-33-2 |
| Molecular Formula | C7H10BrN3 |
| Molecular Weight | 216.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 216.08 g/mol gives (R)-4-bromo-1-(pyrrolidin-3-yl)-1H-pyrazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
(R)-4-bromo-1-(pyrrolidin-3-yl)-1H-pyrazole (CAS 1428331-33-2) is a high-purity analytical reference standard with the molecular formula C7H10BrN3 and a molecular weight of 216.08 g/mol.
Based on its molecular formula C7H10BrN3, (R)-4-bromo-1-(pyrrolidin-3-yl)-1H-pyrazole contains a nitrile group, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 216.08 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), (R)-4-bromo-1-(pyrrolidin-3-yl)-1H-pyrazole 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 | C7H10BrN3 |
| Molecular Weight | 216.08 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 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
Related R Standards
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Recommended Standards
- (2-Amino-5-bromo-3-methylphenyl)methanol (CAS 1417565-40-2)
- (S)-4-bromo-1-(pyrrolidin-3-yl)-1H-pyrazole (CAS 1428331-37-6)
- 4-Bromo-N3,N3-dimethylpyridine-2,3-diamine (CAS 1417535-05-7)
- 5-Bromo-6-isopropylpyrimidin-4-amine (CAS 1443292-20-3)
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