4-(4-Oxo-5-(2-oxoindolin-3-ylidene)-2-thioxothiazolidin-3-yl)benzoic acid CAS 305376-86-7
| CAS No. | 305376-86-7 |
| Molecular Formula | C18H10N2O4S2 |
| Molecular Weight | 382.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 4-(4-Oxo-5-(2-oxoindolin-3-ylidene)-2-thioxothiazolidin-3-yl)benzoic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
CATO supplies 4-(4-Oxo-5-(2-oxoindolin-3-ylidene)-2-thioxothiazolidin-3-yl)benzoic acid (CAS 305376-86-7), a certified reference material (molecular formula C18H10N2O4S2, MW 382.41 g/mol) for analytical method development and quality control.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 4-(4-Oxo-5-(2-oxoindolin-3-ylidene)-2-thioxothiazolidin-3-yl)benzoic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 382.41 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C18H10N2O4S2 |
| Molecular Weight | 382.41 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Oxo Standards
- 1-Benzyl-2-oxoindolin-3-yl 4-chlorobenzoate (CAS 400076-66-6)
- 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)
- 5-(1-Methyl-2-oxoindolin-3-ylidene)-2-thioxo-3-(m-tolyl)thiazolidin-4-one (CAS 312935-65-2)
- 4-(5-(1-Methyl-2-oxoindolin-3-ylidene)-4-oxo-2-thioxothiazolidin-3-yl)butanoic acid (CAS 306322-03-2)
- 2-(1-Ethyl-2-oxoindolin-3-ylidene)-6-phenyl-2H-thiazolo[3,2-b][1,2,4]triazine-3,7-dione (CAS 607384-96-3)
- 1-Benzyl-2-oxoindolin-3-yl phenylcarbamate (CAS 400076-63-3)
- 3-(5-(1-Methyl-2-oxoindolin-3-ylidene)-4-oxo-2-thioxothiazolidin-3-yl)propanoic acid (CAS 305376-97-0)
Recommended Standards
- 4-(3-Methoxyphenyl)-N-(3-oxo-3,4-dihydro-2H-1,4-benzoxazin-6-yl)piperazine-1-carboxamide (CAS 866144-61-8)
- 4-(5-(2,3-Dimethoxyphenyl)-3-phenyl-4,5-dihydro-1H-pyrazol-1-yl)-4-oxobutanoic acid (CAS 377761-78-9)
- 4-(3,5-Bis(4-methoxyphenyl)-4,5-dihydro-1H-pyrazol-1-yl)-4-oxobutanoic acid (CAS 337482-89-0)
- 4,5-Dibromo-2-(3-chloro-4-fluorophenyl)pyridazin-3(2H)-one (CAS 221031-24-9)
- (Tetrahydro-2H-thiopyran-4-yl)hydrazine (CAS 683744-65-2)
- Methyl 8-nitroquinoxaline-6-carboxylate (CAS 1706445-46-6)
- (2E)-3-(2,4-Dichlorophenyl)-3-oxo-2-(2-phenylhydrazin-1-ylidene)propanal (CAS 338414-48-5)
- Methyl 3-(N-(2,4-dimethylphenyl)sulfamoyl)-4-fluorobenzo[b]thiophene-2-carboxylate (CAS 932520-41-7)
- 2,3-Dimethyl-6-(phenylamino)quinoxaline-5,8-dione (CAS 7706-42-5)
- 6-(Trifluoromethyl)isoquinoline (CAS 1194375-62-6)
- Benzo[b]thiophen-7-amine (CAS 17402-91-4)
- H-Arg(NO2)-pNA . HBr (E-3380.0001) (CAS 29028-61-3)
- 1-(4-Amino-5H-pyrrolo[3,4-d]pyrimidin-6(7H)-yl)ethanone (CAS 1854-45-1)
- (Tyr9)-Cholecystokinin Octapeptide (sulfated) (H-9770.0005) (CAS 96607-61-3)
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