3,5-Dibromo-4-(trifluoromethyl)-1H-pyrazole CAS 2641467-69-6
| CAS No. | 2641467-69-6 |
| Molecular Formula | C4HBr2F3N2 |
| Molecular Weight | 293.87 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3,5-Dibromo-4-(trifluoromethyl)-1H-pyrazole (CAS 2641467-69-6), molecular formula C4HBr2F3N2 and molecular weight 293.87 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3,5-Dibromo-4-(trifluoromethyl)-1H-pyrazole (C4HBr2F3N2) contains a nitrile group, fluorine/bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 293.87 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
Physical & Chemical Properties
| Molecular Formula | C4HBr2F3N2 |
| Molecular Weight | 293.87 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.) | 2002 |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 2 |
Related Dibromo Standards
- 2,4-Dibromo-5-(trifluoromethyl)-1H-imidazole (CAS 81654-02-6)
- 3,4-Dibromo-5-(trifluoromethyl)-1H-pyrazole (CAS 19968-15-1)
- 4,5-Dibromo-2-(trifluoromethyl)-1H-imidazole (CAS 81654-03-7)
- 3,6-Dibromo-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one (CAS 96555-36-1)
- 3,6-Dibromo-8-fluoroimidazo[1,2-a]pyridine (CAS 1260817-61-5)
- 3,6-Dibromo-5-fluoro-1H-indazole (CAS 1286734-81-3)
- 2,4-Dibromo-5-fluoro-1H-benzo[d]imidazole (CAS 1388026-23-0)
- 2,4-Dibromo-7-fluoro-1H-benzo[d]imidazole (CAS 1388048-52-9)
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- {3-[3-(2,2,2-trifluoroethyl)-1,2,4-oxadiazol-5-yl]phenyl}methanamine hydrochloride (CAS 1803607-88-6)
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- 263251-78-1 NMG938VJ6T D-3 Tavilermide [USAN:INN] UNII-NMG938VJ6T MIM-D3 MIM-D 3 D 3 (peptide) Tavilermide (CAS 263251-78-1)
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