3-(2-(4-(3-Ethyl-4-oxo-2-thioxothiazolidin-5-ylidene)but-2-en-1-ylidene)benzo[d]thiazol-3(2H)-yl)propane-1-sulfonic acid CAS 64285-53-6
| CAS No. | 64285-53-6 |
| Molecular Formula | C19H20N2O4S4 |
| Molecular Weight | 468.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-(2-(4-(3-Ethyl-4-oxo-2-thioxothiazolidin-5-ylidene)but-2-en-1-ylidene)benzo[d]thiazol-3(2H)-yl)propane-1-sulfonic acid (CAS 64285-53-6), molecular formula C19H20N2O4S4 and molecular weight 468.63 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3-(2-(4-(3-Ethyl-4-oxo-2-thioxothiazolidin-5-ylidene)but-2-en-1-ylidene)benzo[d]thiazol-3(2H)-yl)propane-1-sulfonic acid (C19H20N2O4S4) 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 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 468.63 g/mol, it falls into the moderately-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).
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.
Physical & Chemical Properties
| Molecular Formula | C19H20N2O4S4 |
| Molecular Weight | 468.63 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 4 |
Recommended Standards
- 4,4'-(Furan-2,5-diyl)bis(N-cyclohexylbenzimidamide) (CAS 192525-52-3)
- Otilonium Bromide Impurity 7 (CAS 26090-29-9)
- 4,4'-(2,2',2",5,5',5"-Hexamethyl-[1,1':4',1"-terphenyl]-4,4"-diyl)dipyridine (CAS 1482505-91-8)
- Dicyclohexyl(2′,4′,6′-trimethyl[1,1′:3′,1′′-terphenyl]-2-yl)phosphine (CAS 1668597-90-7)
- 8-(4-Chlorophenyl)-6-methyl-3,4-dihydro-2H-1,4-ethano-1,5-naphthyridine-7-carbonitrile (CAS 860784-22-1)
- N,N'-Bis(2,5-dichlorophenyl)propanediamide (CAS 116476-54-1)
- 4-bromo-2-hydroxy-N,N-dimethylbenzamide (CAS 1243288-05-2)
- (2R,3S,4R,5R)-2-(Hydroxymethyl)-5-(6-((3-iodobenzyl)amino)-9H-purin-9-yl)tetrahydrofuran-3,4-diol (CAS 163152-30-5)
- 4-(4-Methylphenoxy)benzonitrile (CAS 37563-42-1)
- Milnacipran Impurity 4 (CAS 64805-64-7)
- 5-(4-Propoxyphenyl)-1H-pyrazole-3-carboxylic acid (CAS 1038997-35-1)
- 1-(2,4-DIbromophenyl)-5-oxo-3-pyrrolidinecarboxylic acid (CAS 887360-30-7)
- 6-(4-Methoxyphenyl)-5-(pyridin-3-yl)furo[2,3-d]pyrimidin-4-amine (CAS 501693-98-7)
- [y-Glu3]-Semaglutide Impurity 135 (CAS CATO-C4X-2226135)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com