1-[(2-chlorophenyl)methyl]-1H-pyrazole CAS 202344-35-2
| CAS No. | 202344-35-2 |
| Molecular Formula | C10H9ClN2 |
| Molecular Weight | 192.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1-[(2-chlorophenyl)methyl]-1H-pyrazole is closely related to a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 1-[(2-chlorophenyl)methyl]-1H-pyrazole (CAS 202344-35-2), a certified reference material (molecular formula C10H9ClN2, MW 192.64 g/mol) for analytical method development and quality control.
The molecular framework of 1-[(2-chlorophenyl)methyl]-1H-pyrazole (C10H9ClN2) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, 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. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C10H9ClN2 |
| Molecular Weight | 192.64 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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.) | 2014 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related chlorophenyl Standards
- 1-(3-Chlorophenyl)-5-methyl-1H-pyrazole (CAS 1247358-87-7)
- 1-(2-Chlorophenyl)-5-methyl-1H-pyrazole (CAS 1247358-96-8)
- 4-(3-Chlorophenyl)-1-methyl-1H-pyrazole (CAS 1266991-19-8)
- 1-(3-Chlorophenyl)-4-methyl-1H-pyrazole (CAS 154396-09-5)
- 1-(2-chlorophenyl)-3-methyl-1H-pyrazole (CAS 1613303-64-2)
- (4E)-5-(4-Chlorophenyl)penta-1,4-dien-3-one, E (CAS 1613309-12-8)
- 1-(4-Chlorophenyl)-3-methyl-1H-pyrazole (CAS 27301-77-5)
- 1-(4-Chlorophenyl)-5-methyl-1H-pyrazole (CAS 671182-58-4)
Recommended Standards
- 1-(6-Chloropyridin-3-yl)cyclobutane-1-carbonitrile (CAS 485828-75-9)
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- 1-Chloro-3,4-dihydronaphthalene-2-carbaldehyde (CAS 3262-03-1)
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- Methyl 5-Methoxy-2-methylbenzoxazole-7-carboxylate (CAS 1221792-76-2)
- 3-Ethoxy-4-isopropoxybenzohydrazide (CAS 1706434-39-0)
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- (R)-3-methyl-1-(piperidin-1-yl)butan-2-amine (CAS 1315360-79-2)
- 1217706-55-2 1294AD C12H13Cl2NO3 Methyl (2S,4S)-4-(2,4-dichlorophenoxy)-2-pyrrolidinecarboxylate (CAS 1217706-55-2)
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