4-(5-(1-Methyl-2-oxoindolin-3-ylidene)-4-oxo-2-thioxothiazolidin-3-yl)butanoic acid CAS 306322-03-2
| CAS No. | 306322-03-2 |
| Molecular Formula | C16H14N2O4S2 |
| Molecular Weight | 362.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(5-(1-Methyl-2-oxoindolin-3-ylidene)-4-oxo-2-thioxothiazolidin-3-yl)butanoic acid (CAS 306322-03-2) is a high-purity analytical reference standard with the molecular formula C16H14N2O4S2 and a molecular weight of 362.42 g/mol.
4-(5-(1-Methyl-2-oxoindolin-3-ylidene)-4-oxo-2-thioxothiazolidin-3-yl)butanoic acid (C16H14N2O4S2) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 | C16H14N2O4S2 |
| Molecular Weight | 362.42 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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.) | 2025 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Methyl Standards
- 1-Benzyl-2-oxoindolin-3-yl phenylcarbamate (CAS 400076-63-3)
- 5-(1-Methyl-2-oxoindolin-3-ylidene)-2-thioxo-3-(m-tolyl)thiazolidin-4-one (CAS 312935-65-2)
- 3-(5-(1-Methyl-2-oxoindolin-3-ylidene)-4-oxo-2-thioxothiazolidin-3-yl)propanoic acid (CAS 305376-97-0)
- 1-Benzyl-2-oxoindolin-3-yl 4-chlorobenzoate (CAS 400076-66-6)
- 4-(4-Oxo-5-(2-oxoindolin-3-ylidene)-2-thioxothiazolidin-3-yl)benzoic acid (CAS 305376-86-7)
- 2-(1-Methyl-2-oxoindolin-3-ylidene)-6-phenyl-2H-thiazolo[3,2-b][1,2,4]triazine-3,7-dione (CAS 607384-94-1)
- 3-(5-(1-Methyl-2-oxoindolin-3-ylidene)-4-oxo-2-thioxothiazolidin-3-yl)benzoic acid (CAS 306322-09-8)
- 2-(2-Oxo-2-(2-oxoindolin-3-yl)acetamido)benzoic acid (CAS 90656-39-6)
Recommended Standards
- 4-(4-((1,4-Dioxa-8-azaspiro[4.5]Decan-8-yl)methyl)benzoyl)benzonitrile (CAS 898757-64-7)
- 4-Fluoro-N-(2-oxo-2-(pyrrolidin-1-yl)ethyl)-N-phenylbenzenesulfonamide (CAS 339103-32-1)
- 4-(3-(4-(Benzyloxy)phenoxy)propoxy)benzaldehyde (CAS 937602-07-8)
- 7-(Diethylamino)-3-(5,6-dimethylbenzo[d]oxazol-2-yl)-2H-chromen-2-one (CAS 57980-76-4)
- [5-(furan-2-yl)-1,2,4-oxadiazol-3-yl]methanamine (CAS 946745-19-3)
- N-(1-Cyano-1-cyclopropylethyl)-2-((5-ethyl-6-methyl-4-oxo-3-((tetrahydrofuran-2-yl)methyl)-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)thio)acetamide (CAS 1011972-31-8)
- 2-((1-(2-Chlorophenyl)isoquinolin-3-yl)oxy)-N,N-dimethylethanamine (CAS 89721-17-5)
- 2-Methoxy-3-thenoylpyridine (CAS 332134-11-9)
- 1-Cyclopentyl-N-((1-methyl-1H-pyrazol-4-yl)methyl)-1H-pyrazol-4-amine hydrochloride (CAS 1856073-82-9)
- (4-Chlorophenyl)(2,4-dimethoxyphenyl)methanone (CAS 57600-76-7)
- 2-Ethoxypropan-1-ol (CAS 19089-47-5)
- ethyl 4-chloro-6-methyl-2-oxo-1,2-dihydropyridine-3-carboxylate (CAS 86129-62-6)
- (2S,5S)-1-tert-Butyl 2-ethyl 5-hydroxy-5-methylpiperidine-1,2-dicarboxylate (CAS 1445951-27-8)
- Tau Peptide (306-336) (Repeat 3 Domain) trifluoroacetate salt (CAS 330456-26-3)
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