1-(2-phenylethyl)-1H-pyrazole-5-carboxylic acid CAS 1342842-63-0
| CAS No. | 1342842-63-0 |
| Molecular Formula | C12H12N2O2 |
| Molecular Weight | 216.24 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.
1-(2-phenylethyl)-1H-pyrazole-5-carboxylic acid (CAS 1342842-63-0) is a high-purity analytical reference standard with the molecular formula C12H12N2O2 and a molecular weight of 216.24 g/mol.
The molecular framework of 1-(2-phenylethyl)-1H-pyrazole-5-carboxylic acid (C12H12N2O2) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. 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).
As a certified reference material (CRM), 1-(2-phenylethyl)-1H-pyrazole-5-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 | C12H12N2O2 |
| Molecular Weight | 216.24 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 2 |
Related phenylethyl Standards
- 1-(2-phenylethyl)-1H-pyrazole-3-carboxylic acid (CAS 1342765-18-7)
- 2-(2-Phenylethyl)-1H-imidazole-4-carboxylic acid (CAS 175210-33-0)
- 3-(2-Oxo-2-phenylethyl)-5,6-dihydropyrazin-2(1h)-one (CAS 1821-59-6)
- (R)-1-(1-phenylethyl)-1H-pyrazole-5-carboxylic acid (CAS 2425818-90-0)
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- (R)-3-((1-phenylethyl)amino)cyclohex-2-enone (CAS 395060-15-8)
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