4-Bromo-3-(2-fluorophenyl)-1-methyl-1H-pyrazole CAS 924287-92-3
| CAS No. | 924287-92-3 |
| Molecular Formula | C10H8BrFN2 |
| Molecular Weight | 255.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 255.09 g/mol gives 4-Bromo-3-(2-fluorophenyl)-1-methyl-1H-pyrazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 4-Bromo-3-(2-fluorophenyl)-1-methyl-1H-pyrazole (CAS 924287-92-3), a certified reference material (molecular formula C10H8BrFN2, MW 255.09 g/mol) for analytical method development and quality control.
Based on its molecular formula C10H8BrFN2, 4-Bromo-3-(2-fluorophenyl)-1-methyl-1H-pyrazole contains a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine/bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 255.09 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-Bromo-3-(2-fluorophenyl)-1-methyl-1H-pyrazole 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 | C10H8BrFN2 |
| Molecular Weight | 255.09 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/Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 1-(4-Bromo-2-fluorobenzyl)-1H-pyrazole (CAS 1029715-40-9)
- 5-Bromo-1-(2-fluorobenzyl)-1H-pyrazole (CAS 1057383-75-1)
- 5-Bromo-1-(3-fluorobenzyl)-1H-pyrazole (CAS 1057383-76-2)
- 5-Bromo-1-(4-fluorobenzyl)-1H-pyrazole (CAS 1057383-80-8)
- 1-(4-Bromo-2-fluorophenyl)-4-methyl-1H-imidazole (CAS 1241675-16-0)
- 5-Bromo-3-(3-fluorophenyl)-1-methyl-1H-pyrazole (CAS 1245130-33-9)
- 1-(4-Bromo-2-fluorobenzyl)-1H-imidazole (CAS 1247045-93-7)
- 1-(2-Bromo-4-fluorobenzyl)-1H-imidazole 1249877-11-9 (CAS 1249877-11-9)
Recommended Standards
- 4-Bromo-1-(4-fluorobenzyl)-1H-pyrazole (CAS 251925-14-1)
- 4-Bromo-3-(4-fluorophenyl)-1-methyl-1h-pyrazole (CAS 863605-34-9)
- 4-Bromo-1-(2-fluorobenzyl)-1H-pyrazole (CAS 957479-38-8)
- 3-(2,4-Dichlorophenyl)-6-hydrazinylpyridazine (CAS 1017377-58-0)
- 1-[4-(4-chlorophenyl)-5-methyl-1,3-thiazol-2-yl]ethan-1-amine (CAS 642929-46-2)
- (7-Chlorobenzofuran-3-yl)methanamine (CAS 1506587-95-6)
- Ethyl 1-((4-fluorophenyl)sulfonyl)piperidine-3-carboxylate (CAS 349624-53-9)
- 4-(1,4-Dioxaspiro[4.5]decan-8-yl)aniline (CAS 389602-90-8)
- 3-Iodo-2-methylquinoline (CAS 1207875-09-9)
- Dabigatran Impurity 152 (CAS CATO-C4X-1089152)
- Valsartan Impurity 81 (CAS CATO-C4X-105781)
- 1-(2-Bromo-4-fluorobenzyl)-4-methylpiperidine (CAS 1250615-20-3)
- 2-(2-Fluorophenyl)-6-(trifluoromethyl)nicotinaldehyde (CAS 1227582-87-7)
- Semaglutide Impurity 123 (CAS 71997-93-8)
Why CATO?
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