(5E)-3-[(3,5-Dimethylphenyl)methyl]-5-{[3-(trifluoromethyl)phenyl]methylidene}-1,3-thiazolidine-2,4-dione CAS 866152-70-7
| CAS No. | 866152-70-7 |
| Molecular Formula | C20H16F3NO2S |
| Molecular Weight | 391.41 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.
(5E)-3-[(3,5-Dimethylphenyl)methyl]-5-{[3-(trifluoromethyl)phenyl]methylidene}-1,3-thiazolidine-2,4-dione (CAS 866152-70-7), molecular formula C20H16F3NO2S and molecular weight 391.41 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of (5E)-3-[(3,5-Dimethylphenyl)methyl]-5-{[3-(trifluoromethyl)phenyl]methylidene}-1,3-thiazolidine-2,4-dione (C20H16F3NO2S) is characterized by a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C20H16F3NO2S |
| Molecular Weight | 391.41 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related E Standards
- N-[(3,4-Dimethylphenyl)methyl]-5-methyl-12-oxo-5H,5aH,6H,7H,8H,9H,10H,12H-azepino[2,1-b]quinazoline-3-carboxamide (CAS 1775348-48-5)
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Recommended Standards
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