Methyl 3-(5-methyl-1H-pyrazole-4-carboxamido)thiophene-2-carboxylate CAS 321574-07-6
| CAS No. | 321574-07-6 |
| Molecular Formula | C11H11N3O3S |
| Molecular Weight | 265.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Methyl 3-(5-methyl-1H-pyrazole-4-carboxamido)thiophene-2-carboxylate is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Methyl 3-(5-methyl-1H-pyrazole-4-carboxamido)thiophene-2-carboxylate (CAS 321574-07-6), a certified reference material (molecular formula C11H11N3O3S, MW 265.29 g/mol) for analytical method development and quality control.
Based on its molecular formula C11H11N3O3S, Methyl 3-(5-methyl-1H-pyrazole-4-carboxamido)thiophene-2-carboxylate contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 265.29 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), Methyl 3-(5-methyl-1H-pyrazole-4-carboxamido)thiophene-2-carboxylate 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 | C11H11N3O3S |
| Molecular Weight | 265.29 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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.) | 2025 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Recommended Standards
- Methyl 3-(2-methylfuran-3-carboxamido)thiophene-2-carboxylate (CAS 293327-12-5)
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- Methyl 2-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-4,5-dimethylthiophene-3-carboxylate (CAS 300812-61-7)
- Methyl 3-{5-[(methoxyimino)methyl]-2-furyl}-2-thiophenecarboxylate (CAS 241488-19-7)
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