(R)-4-Bromo-1-pyrrolidin-3-yl-1H-pyrazole dihydrochloride CAS 1428331-36-5
| CAS No. | 1428331-36-5 |
| Molecular Formula | C7H10BrN3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(R)-4-Bromo-1-pyrrolidin-3-yl-1H-pyrazole dihydrochloride (CAS 1428331-36-5) is a high-purity analytical reference standard with the molecular formula C7H10BrN3HCl and a molecular weight of 252.54 g/mol.
The molecular framework of (R)-4-Bromo-1-pyrrolidin-3-yl-1H-pyrazole dihydrochloride (C7H10BrN3HCl) is characterized by a nitrile group, chlorine/bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C7H10BrN3 2*HCl |
| Molecular Weight | 252.54 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 3 |
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- Semaglutide impurity 83 (CAS CATO-C4X-222683)
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