5-Chloro-1-(3-chlorophenyl)-3-methyl-1H-pyrazole-4-carbaldehyde CAS 77509-92-3
| CAS No. | 77509-92-3 |
| Molecular Formula | C11H8Cl2N2O |
| Molecular Weight | 255.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Chloro-1-(3-chlorophenyl)-3-methyl-1H-pyrazole-4-carbaldehyde (CAS 77509-92-3), molecular formula C11H8Cl2N2O and molecular weight 255.10 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 5-Chloro-1-(3-chlorophenyl)-3-methyl-1H-pyrazole-4-carbaldehyde is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 255.10 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C11H8Cl2N2O |
| Molecular Weight | 255.10 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.) | 1979 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 6-Chloro-N4-(4-chlorophenyl)pyrimidine-4,5-diamine (CAS 103505-49-3)
- 5-Chloro-2-(chloromethyl)-6-phenylpyridazin-3(2H)-one (CAS 1206156-64-0)
- 7-Chloro-6-(2-chloroethyl)-5-methylpyrazolo[1,5-a]pyrimidine-3-carbonitrile (CAS 129909-69-9)
- 2-chloro-6-(4-chlorophenoxy)-4-Pyridinamine (CAS 1639298-80-8)
- (Z)-4-chloro-2-(((4-chlorophenyl)amino)methylene)-3-oxobutanenitrile (CAS 339097-10-8)
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Recommended Standards
- 5-Chloro-1-(2-chlorophenyl)-3-methyl-1h-pyrazole-4-carbaldehyde (CAS 370561-61-8)
- 5-Chloro-1-(4-chlorophenyl)-3-methyl-1H-pyrazole-4-carbaldehyde (CAS 77509-93-4)
- 5,7-Dichloro-1h,2h,3h,9h-pyrrolo[2,1-b]quinazolin-9-one (CAS 730992-38-8)
- 5-Chloro-6-(3-chlorophenyl)-2-methylpyridazin-3(2H)-one (CAS 849021-00-7)
- 4-(1-(2,5-Difluorophenyl)-6-hydroxy-1H-indazol-3-yl)benzene-1,3-diol (CAS 680610-84-8)
- 5-(2,4-Dichlorophenyl)oxazole-4-carboxylic Acid (CAS 255876-52-9)
- 4-(1-Methyl-1H-indol-3-yl)pyrrolidin-2-one (CAS 88221-20-9)
- 1-Chloro-1-ethoxyethane (CAS 7081-78-9)
- LCZ-696 Impurity 16 (CAS 1639970-62-9)
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- 3-Methoxy-4-(pyrrolidin-1-yl)benzonitrile (CAS 1393442-48-2)
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