3-Bromo-6-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)-2-methylpyrazolo[1,5-a]pyrimidine CAS 338953-41-6
| CAS No. | 338953-41-6 |
| Molecular Formula | C13H7BrClF3N4 |
| Molecular Weight | 391.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 391.57 g/mol gives 3-Bromo-6-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)-2-methylpyrazolo[1,5-a]pyrimidine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3-Bromo-6-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)-2-methylpyrazolo[1,5-a]pyrimidine (CAS 338953-41-6), molecular formula C13H7BrClF3N4 and molecular weight 391.57 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C13H7BrClF3N4, 3-Bromo-6-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)-2-methylpyrazolo[1,5-a]pyrimidine contains a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine/chlorine/bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 391.57 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), 3-Bromo-6-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)-2-methylpyrazolo[1,5-a]pyrimidine 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 | C13H7BrClF3N4 |
| Molecular Weight | 391.57 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Cl/Br-containing |
| Nitrogen Atoms | 4 |
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