5-(1-Ethyl-5-methyl-1H-pyrazole-3-carbonyl)furan-2-carboxylic acid CAS 1399656-17-7
| CAS No. | 1399656-17-7 |
| Molecular Formula | C12H12N2O4 |
| Molecular Weight | 248.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-(1-Ethyl-5-methyl-1H-pyrazole-3-carbonyl)furan-2-carboxylic acid is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-(1-Ethyl-5-methyl-1H-pyrazole-3-carbonyl)furan-2-carboxylic acid (CAS 1399656-17-7) is a high-purity analytical reference standard with the molecular formula C12H12N2O4 and a molecular weight of 248.23 g/mol.
Based on its molecular formula C12H12N2O4, 5-(1-Ethyl-5-methyl-1H-pyrazole-3-carbonyl)furan-2-carboxylic 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 248.23 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.
As a certified reference material (CRM), 5-(1-Ethyl-5-methyl-1H-pyrazole-3-carbonyl)furan-2-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 | C12H12N2O4 |
| Molecular Weight | 248.23 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 |
Recommended Standards
- 2-(((Benzyloxy)carbonyl)amino)-3-cyanopropanoic acid (CAS 138750-46-6)
- 5-(1-Ethyl-3-methyl-1H-pyrazole-5-carbonyl)furan-2-carboxylic acid (CAS 1399656-47-3)
- Ethyl 5-hydroxy-4-methyl-2-oxo-2H-chromene-3-carboxylate (CAS 137565-36-7)
- Methyl 5-(1,5-dimethyl-1H-pyrazole-3-carbonyl)furan-2-carboxylate (CAS 1399663-78-5)
- 4-Bromo-1-(chloromethyl)-1H-pyrazole (CAS 861001-09-4)
- Methyl 4-(2-(4-formylphenoxy)ethoxy)benzoate (CAS 866003-00-1)
- 3,5-Dichlorobenzoic-d3 Acid (CAS 1219803-99-2)
- 1-(4-(Trans-4-butylcyclohexyl)phenyl)ethanone (CAS 83626-30-6)
- 4-Hydroxy-1-((2,3,5,6-tetramethylphenyl)sulfonyl)pyrrolidine-2-carboxylic acid (CAS 1008981-54-1)
- 1-Butyl-2,3-dimethylimidazolium Trifluoromethanesulfonate (CAS 765910-73-4)
- Cyclopropa[3,4]cyclopenta[1,2-b]quinoxaline (CAS 114535-15-8)
- Disperse Red 5 (CAS 3769-57-1)
- 2,3-Dihydro-1H-pyrrolo[3,2-b]pyridine-6-carbonitrile (CAS 1194683-74-3)
- Semaglutide-d5 (CAS CATO-C4X-2226153)
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