3-Isobutyl-5-((3-(4-methoxy-2-methylphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2-thioxothiazolidin-4-one CAS 623933-10-8
| CAS No. | 623933-10-8 |
| Molecular Formula | C25H25N3O2S2 |
| Molecular Weight | 463.61 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Isobutyl-5-((3-(4-methoxy-2-methylphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2-thioxothiazolidin-4-one (CAS 623933-10-8), molecular formula C25H25N3O2S2 and molecular weight 463.61 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3-Isobutyl-5-((3-(4-methoxy-2-methylphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2-thioxothiazolidin-4-one (C25H25N3O2S2) is characterized by a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C25H25N3O2S2 |
| Molecular Weight | 463.61 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
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Recommended Standards
- 3-Ethyl-5-((3-(2-methyl-4-propoxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2-thioxothiazolidin-4-one (CAS 623933-07-3)
- 5-((3-(4-Ethoxy-2-methylphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-3-propyl-2-thioxothiazolidin-4-one (CAS 623933-13-1)
- 3,6-Bis(2-(4-methylpiperazin-1-yl)ethoxy)acridine (CAS 81541-35-7)
- 5-((3-(4-Isobutoxy-3-methylphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-3-methyl-2-thioxothiazolidin-4-one (CAS 623934-88-3)
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