5-(5-Oxo-3-stearamido-4,5-dihydro-1H-pyrazol-1-yl)-2-phenoxybenzenesulfonic acid CAS 25985-53-9
| CAS No. | 25985-53-9 |
| Molecular Formula | C33H47N3O6S |
| Molecular Weight | 613.81 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-(5-Oxo-3-stearamido-4,5-dihydro-1H-pyrazol-1-yl)-2-phenoxybenzenesulfonic acid (CAS 25985-53-9), molecular formula C33H47N3O6S and molecular weight 613.81 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-(5-Oxo-3-stearamido-4,5-dihydro-1H-pyrazol-1-yl)-2-phenoxybenzenesulfonic acid (C33H47N3O6S) contains a nitrogen-containing heterocyclic scaffold, 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 613.81 g/mol, it falls into the high-molecular-weight range. 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).
CATO manufactures 5-(5-Oxo-3-stearamido-4,5-dihydro-1H-pyrazol-1-yl)-2-phenoxybenzenesulfonic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C33H47N3O6S |
| Molecular Weight | 613.81 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Recommended Standards
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Why CATO?
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