1-(4-Bromophenyl)-3-methylpyrazole CAS 98946-73-7
| CAS No. | 98946-73-7 |
| Molecular Formula | C10H9BrN2 |
| Molecular Weight | 237.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 1-(4-Bromophenyl)-3-methylpyrazole (C10H9BrN2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, 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 237.10 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
1-(4-Bromophenyl)-3-methylpyrazole (CAS 98946-73-7), molecular formula C10H9BrN2 and molecular weight 237.10 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C10H9BrN2 |
| Molecular Weight | 237.10 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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.) | 1985 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromophenyl Standards
- 2-(3-Bromophenyl)-4-methyl-1H-imidazole (CAS 114748-87-7)
- 1-(3-bromophenyl)-4-methyl-1H-pyrazole (CAS 1183715-73-2)
- 1-(4-bromophenyl)-4-methyl-1h-pyraZole (CAS 1184673-82-2)
- 2-(4-Bromophenyl)-4-methyl-1H-imidazole (CAS 1187927-85-0)
- 4-(4-Bromophenyl)-1-methyl-1H-pyrazole (CAS 1191616-45-1)
- 5-(3-Bromophenyl)-1-methylimidazole (CAS 1218910-50-9)
- 1-(4-Bromophenyl)-5-methyl-1H-pyrazole (CAS 1227958-63-5)
- 1-[(3-bromophenyl)methyl]-1h-pyrazole (CAS 1247393-02-7)
Recommended Standards
- 1-(4-Bromobenzyl)imidazole (CAS 72459-46-2)
- 1-(4-Bromophenyl)-4-methyl-1H-imidazole (CAS 884199-52-4)
- 1-(4-Bromo-3-methylphenyl)-1H-pyrazole (CAS 858523-45-2)
- 1-(5-Bromopyridin-2-yl)cyclobutanecarbonitrile (CAS 485828-81-7)
- 1-[(3-bromo-1-methyl-1H-pyrazol-4-yl)methyl]-4-methoxy-2-methylpiperidine (CAS 2160117-29-1)
- 1-methylindole-2-sulfonyl chloride (CAS 184039-88-1)
- 9,9'-(Butane-1,4-diyl)bis(9H-fluorene-9-carboxylic acid) (CAS 1881321-31-8)
- [(3,4-Dimethoxyphenyl)methyl]({[(3,4-dimethoxyphenyl)methyl]sulfamoyl})amine (CAS 337924-32-0)
- 1-(2-Bromoallyl)-4-isobutylbenzene (CAS 1379352-51-8)
- 2',3'-Dideoxy-2'-fluorouridine (CAS 122929-22-0)
- Tryptamine-β,β-d2 HCl (CAS 362049-48-7)
- 2-Ethyl-N-(4-phenyl-1,2,5-oxadiazol-3-yl)butanamide (CAS 866248-36-4)
- 1-bromonaphthalene-2-sulfonyl chloride (CAS 90948-01-9)
- Tirzepatide Impurity 52 (CAS CATO-C4X-324052)
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