(S)-4-bromo-1-(pyrrolidin-3-yl)-1H-pyrazole CAS 1428331-37-6
| CAS No. | 1428331-37-6 |
| Molecular Formula | C7H10BrN3 |
| Molecular Weight | 216.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrile group, bromine substitution, an aromatic ring system, (S)-4-bromo-1-(pyrrolidin-3-yl)-1H-pyrazole is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 216.08 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
(S)-4-bromo-1-(pyrrolidin-3-yl)-1H-pyrazole (CAS 1428331-37-6) is a high-purity analytical reference standard with the molecular formula C7H10BrN3 and a molecular weight of 216.08 g/mol.
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), (S)-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 S Standards
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Recommended Standards
- (R)-4-bromo-1-(pyrrolidin-3-yl)-1H-pyrazole (CAS 1428331-33-2)
- 5-Bromo-6-isopropylpyrimidin-4-amine (CAS 1443292-20-3)
- (2-Amino-5-bromo-3-methylphenyl)methanol (CAS 1417565-40-2)
- 2-Bromo-6-methoxy-4-methylaniline (CAS 147699-87-4)
- (2-((Tetrahydrofuran-3-yl)oxy)pyridin-4-yl)boronic acid (CAS 2225152-13-4)
- 3-Iodo-5-methoxybenzoic acid (CAS 74440-82-7)
- 3-Fluoro-5-(piperidin-3-yl)pyridine (CAS 1260864-37-6)
- Methyl 8-fluoro-1,2,3,4-tetrahydroisoquinoline-6-carboxylate (CAS 2090330-13-3)
- Mirogabalin Impurity 103 HCl (CAS CATO-C4X-2924164)
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- 4-Ethoxy-2-propyl-3,4-dihydro-2H-pyrido[1,2-a]pyrimidine (CAS 210159-52-7)
- 2H-Pyrazolo[3,4-b]pyridine (CAS 271-71-6)
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