5-Chloro-3-methyl-1-(3-methylphenyl)-1h-pyrazole-4-carbaldehyde CAS 1152576-64-1
| CAS No. | 1152576-64-1 |
| Molecular Formula | C12H11ClN2O |
| Molecular Weight | 234.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 5-Chloro-3-methyl-1-(3-methylphenyl)-1h-pyrazole-4-carbaldehyde (C12H11ClN2O) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
5-Chloro-3-methyl-1-(3-methylphenyl)-1h-pyrazole-4-carbaldehyde (CAS 1152576-64-1) is a high-purity analytical reference standard with the molecular formula C12H11ClN2O and a molecular weight of 234.68 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5-Chloro-3-methyl-1-(3-methylphenyl)-1h-pyrazole-4-carbaldehyde 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 | C12H11ClN2O |
| Molecular Weight | 234.68 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
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- 5-Chloro-3-ethyl-1-phenyl-1H-pyrazole-4-carbaldehyde (CAS 1046784-61-5)
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Recommended Standards
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- 2-(2-Chlorophenyl)-1-(2-methylfuran-3-yl)ethan-1-one (CAS 1178926-70-9)
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- Triclosan methyl D3 (methoxy D3) (CAS 1020720-00-6)
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- α-isolupanine (CAS 486-87-3)
- Ethyl5-amino-4-cyano-1-p-tolylpyrazole-3-carboxylate (CAS 152992-58-0)
- 3-Ethynyl-1,5-naphthyridine (CAS 1428445-80-0)
- (E)-(2-Ethoxyvinyl)benzene (CAS 20565-86-0)
- N-(3-Amino-4-chlorophenyl)-2-thiophenecarboxamide (CAS 926203-02-3)
- 4,6-Dimethylpyrimidine-2-carbaldehyde (CAS 27427-90-3)
- Des-Phe22-Tirzepatide (CAS CATO-CPTD788951)
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