5-Chloro-4-(chloromethyl)-3-methyl-1-phenyl-1h-pyrazole CAS 77509-88-7
| CAS No. | 77509-88-7 |
| Molecular Formula | C11H10Cl2N2 |
| Molecular Weight | 241.12 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-Chloro-4-(chloromethyl)-3-methyl-1-phenyl-1h-pyrazole (CAS 77509-88-7), molecular formula C11H10Cl2N2 and molecular weight 241.12 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C11H10Cl2N2, 5-Chloro-4-(chloromethyl)-3-methyl-1-phenyl-1h-pyrazole contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 241.12 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.
As a certified reference material (CRM), 5-Chloro-4-(chloromethyl)-3-methyl-1-phenyl-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 | C11H10Cl2N2 |
| Molecular Weight | 241.12 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.) | 1979 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
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- 5-Chloro-4-(chloromethyl)-1-methyl-3-phenyl-1H-pyrazole (CAS 321538-19-6)
- 6-Chloro-2-(3-chloropropyl)quinazoline (CAS 2006277-48-9)
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Recommended Standards
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- 6,8-Dichloro-1H,2H,3H,4H,5H-pyrido[4,3-b]indole (CAS 439928-26-4)
- 5-Bromo-2,2-dimethylchroman (CAS 263903-19-1)
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- 3-Chloro-5-methoxy-1H-pyrrolo[2,3-c]pyridine (CAS 2089334-26-7)
- 1-Ethyl 4-methyl 3-methoxy-2-oxosuccinate (CAS 412018-73-6)
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