4-Bromo-1,2-dihydro-3h-pyrazol-3-imine hydrobromide CAS 16461-99-7
| CAS No. | 16461-99-7 |
| Molecular Formula | C3H4BrN3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Bromo-1,2-dihydro-3h-pyrazol-3-imine hydrobromide is closely related to a nitrile group, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-Bromo-1,2-dihydro-3h-pyrazol-3-imine hydrobromide (CAS 16461-99-7), molecular formula C3H4BrN3HBr and molecular weight 242.90 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C3H4BrN3HBr, 4-Bromo-1,2-dihydro-3h-pyrazol-3-imine hydrobromide contains a nitrile group, bromine substitution; these features give the compound characteristic molecular-ion distribution patterns in mass spectrometry. The molecular weight of 242.90 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C3H4BrN3 HBr |
| Molecular Weight | 242.90 g/mol |
| 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 | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
Related Bromo Standards
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- 2-(2-methyl-1H-1,3-benzodiazol-1-yl)ethan-1-amine dihydrochloride (CAS 103394-45-2)
- Semaglutide impurity 47 (CAS CATO-C4X-222647)
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