5-bromo-1-(4-fluorophenyl)-1H-pyrazole CAS 1245149-36-3
| CAS No. | 1245149-36-3 |
| Molecular Formula | C9H6BrFN2 |
| Molecular Weight | 241.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 241.06 g/mol gives 5-bromo-1-(4-fluorophenyl)-1H-pyrazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 5-bromo-1-(4-fluorophenyl)-1H-pyrazole (CAS 1245149-36-3), a certified reference material (molecular formula C9H6BrFN2, MW 241.06 g/mol) for analytical method development and quality control.
Structurally, 5-bromo-1-(4-fluorophenyl)-1H-pyrazole (C9H6BrFN2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine/bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 241.06 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C9H6BrFN2 |
| Molecular Weight | 241.06 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.) | 1990 |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 2 |
Related bromo Standards
- 3-Bromo-6-fluoroquinolin-4-amine (CAS 1065088-21-2)
- 3-Bromo-8-fluoroquinolin-4-amine (CAS 1065088-27-8)
- 8-Bromo-5-fluoroisoquinolin-3-amine (CAS 1221974-48-6)
- 8-Bromo-6-fluoroquinolin-4-amine (CAS 1248250-53-4)
- 6-Bromo-8-fluoroisoquinolin-3-amine (CAS 1260815-69-7)
- 4-Bromo-1-(3-fluorophenyl)-1H-imidazole (CAS 1353855-68-1)
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- 8-Bromo-6-fluoroisoquinolin-3-amine (CAS 1363405-22-4)
Recommended Standards
- 5-Iodo-2-methoxythiazole (CAS 2137792-51-7)
- 4-Iodo-3-methoxyisothiazole (CAS 60666-89-9)
- 4,7-Dichloro-8-fluoroquinoline-3-carbonitrile (CAS 936498-03-2)
- 2-(3-Bromo-4-fluorophenyl)-1H-imidazole (CAS 1368667-05-3)
- 5-fluoro-1,3-dimethyl-benzimidazol-2-one (CAS 1488355-90-3)
- 4-(5-chloropyridin-2-yl)-4-oxobutanoic acid (CAS 1542589-72-9)
- 2-(3-Fluorobenzyl)piperazine (CAS 910444-91-6)
- Ethyl 3-amino-1,6-dimethyl-4-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridine-2-carboxylate (CAS 1353877-98-1)
- 2-Methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-9-yl acetate (CAS 61316-20-9)
- 2-(4,5-Dimethyl-1H-imidazol-2-yl)piperidine (CAS 933750-40-4)
- Sodium Tetraphenylborate (CAS 143-66-8)
- tert-Butyl 5-oxohexanoate (CAS 111490-79-0)
- (E)-2-Morpholino-4-phenylbut-3-enoicacid (CAS 201852-50-8)
- Valosin Peptide (VQY), porcine (CAS 99510-37-9)
Why CATO?
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