1-(2-fluorophenyl)-3,5-dimethylpyrazole CAS 1153039-39-4
| CAS No. | 1153039-39-4 |
| Molecular Formula | C11H11FN2 |
| Molecular Weight | 190.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 1-(2-fluorophenyl)-3,5-dimethylpyrazole 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.
1-(2-fluorophenyl)-3,5-dimethylpyrazole (CAS 1153039-39-4), molecular formula C11H11FN2 and molecular weight 190.22 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine substitution, 1-(2-fluorophenyl)-3,5-dimethylpyrazole is typically off-white to pale yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 190.22 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C11H11FN2 |
| Molecular Weight | 190.22 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
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- 4-(4-fluorophenyl)cyclohex-3-en-1-one (CAS 36716-73-1)
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Recommended Standards
- Cis-6-(mercaptomethyl)-2-oxohexahydropyrimidine-4-carboxylic acid (CAS 114132-84-2)
- 2-((Cyclopropylmethyl)amino)-6-fluorobenzonitrile (CAS 1153457-56-7)
- 3-Oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-7-carbonitrile (CAS 1094107-95-5)
- N-[(1-Methyl-1H-pyrazol-4-yl)methyl]sulfamide (CAS 1170651-67-8)
- SIMMONDSIN (CAS 51771-52-9)
- 1-((4-Fluorobenzyl)oxy)-2-(trifluoromethyl)benzene (CAS 1443353-31-8)
- Tert-butyl 2-cyanoazepane-1-carboxylate (CAS 153749-93-0)
- 2-(3-Fluorophenyl)-4-methylpyrrolidine (CAS 603068-44-6)
- 1-(2-Methoxyphenyl)-3-(3-methoxyphenyl)propan-1-one (CAS 75849-06-8)
- 5-bromo-4-(4-fluorophenyl)pyrimidin-2-amine (CAS 2007916-79-0)
- 4-Cyano-5-(difluoromethyl)-3-hydroxypyridine-2-sulfonyl chloride (CAS 1807075-89-3)
- 2-[4-(3-Fluoro-4-methoxyphenyl)-5-methylpyrimidin-2-yl]-4-(2-hydroxyethyl)-5-methyl-2,3-dihydro-1H-pyrazol-3-one (CAS 866133-80-4)
- 3-Ethyl-4-(methoxyamino)-2,5-dioxoimidazolidine-4-carboxamide (CAS 644972-61-2)
- D-[Ser]8-Liraglutide (CAS CATO-C4X-199238)
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