4-Chloro-1-(2-chloro-4-fluorobenzyl)-1,2-dihydro-3h-pyrazol-3-imine CAS 956395-96-3
| CAS No. | 956395-96-3 |
| Molecular Formula | C10H8Cl2FN3 |
| Molecular Weight | 260.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Chloro-1-(2-chloro-4-fluorobenzyl)-1,2-dihydro-3h-pyrazol-3-imine (CAS 956395-96-3) is a high-purity analytical reference standard with the molecular formula C10H8Cl2FN3 and a molecular weight of 260.10 g/mol.
Based on its molecular formula C10H8Cl2FN3, 4-Chloro-1-(2-chloro-4-fluorobenzyl)-1,2-dihydro-3h-pyrazol-3-imine contains a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 260.10 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.
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), 4-Chloro-1-(2-chloro-4-fluorobenzyl)-1,2-dihydro-3h-pyrazol-3-imine 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 | C10H8Cl2FN3 |
| Molecular Weight | 260.10 g/mol |
| Appearance | Off-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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |
Related Chloro Standards
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