| CAS No. | 338406-10-3 |
| Molecular Formula | C23H14Cl4N2O2S |
| Molecular Weight | 524.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
3'-(3,4-Dichlorophenyl)-1-[(2,4-dichlorophenyl)methyl]-1,2-dihydrospiro[indole-3,2'-[1,3]thiazolidine]-2,4'-dione (CAS 338406-10-3) is a high-purity analytical reference standard with the molecular formula C23H14Cl4N2O2S and a molecular weight of 524.25 g/mol.
3'-(3,4-Dichlorophenyl)-1-[(2,4-dichlorophenyl)methyl]-1,2-dihydrospiro[indole-3,2'-[1,3]thiazolidine]-2,4'-dione (C23H14Cl4N2O2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
| Molecular Formula | C23H14Cl4N2O2S |
| Molecular Weight | 524.25 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |