2-(3,5-Dimethyl-1H-pyrazole-1-carbonyl)-N-(4-isopropylphenyl)-N-methylthiophene-3-sulfonamide CAS 1291486-51-5
| CAS No. | 1291486-51-5 |
| Molecular Formula | C20H23N3O3S2 |
| Molecular Weight | 417.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 417.54 g/mol gives 2-(3,5-Dimethyl-1H-pyrazole-1-carbonyl)-N-(4-isopropylphenyl)-N-methylthiophene-3-sulfonamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-(3,5-Dimethyl-1H-pyrazole-1-carbonyl)-N-(4-isopropylphenyl)-N-methylthiophene-3-sulfonamide (CAS 1291486-51-5), molecular formula C20H23N3O3S2 and molecular weight 417.54 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C20H23N3O3S2, 2-(3,5-Dimethyl-1H-pyrazole-1-carbonyl)-N-(4-isopropylphenyl)-N-methylthiophene-3-sulfonamide contains a steroid core, 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 417.54 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 2-(3,5-Dimethyl-1H-pyrazole-1-carbonyl)-N-(4-isopropylphenyl)-N-methylthiophene-3-sulfonamide 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 | C20H23N3O3S2 |
| Molecular Weight | 417.54 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
Related Dimethyl Standards
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