5-(2-Pyridyl)-3-pyrazolecarboxylic Acid CAS 374064-02-5
| CAS No. | 374064-02-5 |
| Molecular Formula | C9H11N3O2 |
| Molecular Weight | 193.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5-(2-Pyridyl)-3-pyrazolecarboxylic 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.
5-(2-Pyridyl)-3-pyrazolecarboxylic Acid (CAS 374064-02-5) is a high-purity analytical reference standard with the molecular formula C9H11N3O2 and a molecular weight of 193.20 g/mol.
Based on its molecular formula C9H11N3O2, 5-(2-Pyridyl)-3-pyrazolecarboxylic Acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 193.20 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C9H11N3O2 |
| Molecular Weight | 193.20 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
Related Pyridyl Standards
- 2-(3-Pyridyl)tetrahydrofuran-2-carboxylic acid (CAS 143619-72-1)
- 5-Oxo-5-(4-pyridyl)valeric acid (CAS 4940-07-2)
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- 4-Methyl-5-(3-pyridyl)-4H-1,2,4-triazole-3-thiol (CAS 3652-31-1)
- 4-(5-Methyl-2-pyridyl)benzonitrile (CAS 102672-85-5)
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- 4-(4-Methyl-2-pyridyl)benzonitrile (CAS 1187168-55-3)
- 2-(2-Pyridyl)indole (CAS 13228-40-5)
Recommended Standards
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- 1-(Benzo[d]oxazol-2-yl)piperidin-4-amine hydrochloride (CAS 483366-73-0)
- (Pyridin-2-ylmethyl)-L-proline (CAS 1026994-11-5)
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