5-Bromo-1-(p-tolyl)-1H-pyrazole-4-carbonitrile CAS 1269292-34-3
| CAS No. | 1269292-34-3 |
| Molecular Formula | C11H8BrN3 |
| Molecular Weight | 262.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-Bromo-1-(p-tolyl)-1H-pyrazole-4-carbonitrile (CAS 1269292-34-3) is a high-purity analytical reference standard with the molecular formula C11H8BrN3 and a molecular weight of 262.11 g/mol.
Based on its molecular formula C11H8BrN3, 5-Bromo-1-(p-tolyl)-1H-pyrazole-4-carbonitrile contains a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 262.11 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C11H8BrN3 |
| Molecular Weight | 262.11 g/mol |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
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Recommended Standards
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- (2-Chlorophenyl)(cyclohexyl)methanol (CAS 259672-46-3)
- 2-(3,4-Difluorophenoxy)aniline (CAS 640766-59-2)
- Albendazole Impurity 16 (CAS 66608-52-4)
- Elacestrant Impurity 5 (CAS CATO-C4X-32325)
- 2-(5-Chloro-2-methylphenoxy)ethane-1-sulfonyl chloride (CAS 1489043-83-5)
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- (R)-1-(1-Phenylethyl)-1H-pyrrole-2-carboxylic acid (CAS 173989-76-9)
- Retatrutide (CAS 2381089-83-2)
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