Ethyl 3-methyl-1-(4-phenoxybenzenesulfonyl)-1h-pyrazole-5-carboxylate CAS 1177343-95-1
| CAS No. | 1177343-95-1 |
| Molecular Formula | C19H18N2O5S |
| Molecular Weight | 386.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies Ethyl 3-methyl-1-(4-phenoxybenzenesulfonyl)-1h-pyrazole-5-carboxylate (CAS 1177343-95-1), a certified reference material (molecular formula C19H18N2O5S, MW 386.42 g/mol) for analytical method development and quality control.
Structurally, Ethyl 3-methyl-1-(4-phenoxybenzenesulfonyl)-1h-pyrazole-5-carboxylate (C19H18N2O5S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 386.42 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), Ethyl 3-methyl-1-(4-phenoxybenzenesulfonyl)-1h-pyrazole-5-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 | C19H18N2O5S |
| Molecular Weight | 386.42 g/mol |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Recommended Standards
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