1-(4-Chlorophenyl)pyrazole-3-carboxylic Acid CAS 19532-40-2
| CAS No. | 19532-40-2 |
| Molecular Formula | C10H7ClN2O2 |
| Molecular Weight | 222.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 222.63 g/mol gives 1-(4-Chlorophenyl)pyrazole-3-carboxylic Acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 1-(4-Chlorophenyl)pyrazole-3-carboxylic Acid (CAS 19532-40-2), a certified reference material (molecular formula C10H7ClN2O2, MW 222.63 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 1-(4-Chlorophenyl)pyrazole-3-carboxylic Acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 222.63 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
As a certified reference material (CRM), 1-(4-Chlorophenyl)pyrazole-3-carboxylic Acid 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 | C10H7ClN2O2 |
| Molecular Weight | 222.63 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorophenyl Standards
- 5-(3-Chlorophenyl)-1h-pyrazole-4-carboxylic acid (CAS 1007541-81-2)
- 5-(2-Chlorophenyl)-1h-pyrazole-4-carboxylic acid (CAS 1007541-84-5)
- 1-(4-Chlorophenyl)pyrimidine-2,4(1H,3H)-dione (CAS 101080-71-1)
- 1-(3-Chlorophenyl)-1H-pyrazole-4-carboxylic acid (CAS 1053085-34-9)
- 6-(2-Chlorophenyl)pyrimidine-2,4(1H,3H)-dione (CAS 106658-35-9)
- 3-(4-Chlorophenyl)pyrimidine-2,4(1H,3H)-dione (CAS 113094-28-3)
- 1-(3-Chlorophenyl)-1H-imidazole-4-carboxylic acid (CAS 114067-96-8)
- 1-(2-chlorophenyl)-1H-pyrazole-3-carboxylic acid (CAS 1152533-76-0)
Recommended Standards
- 1-(1-Chloro-2,2,2-trifluoroethyl)-3,5-dimethylbenzene (CAS 191402-57-0)
- (2E)-3-{2-chloroimidazo[1,2-a]pyridin-3-yl}prop-2-enoic acid (CAS 2055614-36-1)
- methyl 2-chloro-5-nitro-pyridine-3-carboxylate (CAS 190271-88-6)
- (4Z)-4-[2-(3-Chlorophenyl)hydrazin-1-ylidene]-4,5-dihydro-1H-pyrazol-5-one (CAS 338416-83-4)
- 5-(Bromomethyl)-3-(difluoromethyl)-6-(trifluoromethyl)pyridin-2-amine (CAS 1806799-63-2)
- 2,2,2-Trifluoro-1-phenyl-1-(pyridin-2-yl)ethan-1-ol (CAS 346647-42-5)
- 2,2,2-Trifluoro-1-(3-fluoro-2-methylphenyl)ethan-1-one (CAS 886370-05-4)
- 2-(((4-Chlorophenyl)thio)methyl)pyrrolidine (CAS 1248823-61-1)
- 1,3-Thiazole-5-carboxamide (CAS 74411-19-1)
- 3-Chloro-2-fluoro-5-(trifluoromethyl)cinnamic acid (CAS 261763-11-5)
- 4-(Bromomethyl)-2,7-dimethyloctane (CAS 1491814-91-5)
- 1,9-Nonanediol (CAS 3937-56-2)
- 1-(4-Cyanophenyl)-N-(2-methoxyethyl)methanesulfonamide (CAS 1041567-41-2)
- Peptide Fmoc-Thi-Thi-OH (CAS CATO-CPTD788552)
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