5-benzyl-1-methyl-1H-pyrazole-4-carboxylic acid CAS 116344-33-3
| CAS No. | 116344-33-3 |
| Molecular Formula | C12H12N2O2 |
| Molecular Weight | 216.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-benzyl-1-methyl-1H-pyrazole-4-carboxylic acid (CAS 116344-33-3) is a high-purity analytical reference standard with the molecular formula C12H12N2O2 and a molecular weight of 216.24 g/mol.
Structurally, 5-benzyl-1-methyl-1H-pyrazole-4-carboxylic acid (C12H12N2O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 216.24 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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-benzyl-1-methyl-1H-pyrazole-4-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.) | 1990 |
| Nitrogen Atoms | 2 |
Recommended Standards
- 5-Ethyl-1-phenyl-1h-pyrazole-4-carboxylic acid (CAS 116344-16-2)
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- Ethyl 6-methylquinazoline-2-carboxylate (CAS 1159976-37-0)
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