2-(4-Oxo-5-(thiophen-2-ylmethylene)-2-thioxothiazolidin-3-yl)ethane-1-sulfonic acid CAS 324564-39-8
| CAS No. | 324564-39-8 |
| Molecular Formula | C10H9NO4S4 |
| Molecular Weight | 335.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 2-(4-Oxo-5-(thiophen-2-ylmethylene)-2-thioxothiazolidin-3-yl)ethane-1-sulfonic acid (C10H9NO4S4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 335.44 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).
2-(4-Oxo-5-(thiophen-2-ylmethylene)-2-thioxothiazolidin-3-yl)ethane-1-sulfonic acid (CAS 324564-39-8), molecular formula C10H9NO4S4 and molecular weight 335.44 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C10H9NO4S4 |
| Molecular Weight | 335.44 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 4 |
Related Oxo Standards
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- 3-Phenyl-6-(thiophen-2-yl)isoxazolo[5,4-b]pyridine-4-carbohydrazide (CAS 937599-65-0)
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Recommended Standards
- 2-(4-(1-Hexyl-1H-indol-2-yl)phenyl)acetic acid (CAS 88561-09-5)
- 2-(Cyclohexylamino)-N'-(diphenylmethylidene)acetohydrazide (CAS 341968-07-8)
- 2-(2-Methoxyphenyl)-3-(phenylsulfonyl)thiazolidine (CAS 397283-53-3)
- 4-(2-Ethylbutanoyl)-N-(3-morpholinopropyl)-1H-pyrrole-2-carboxamide (CAS 439112-12-6)
- (4-Cyanothiophen-3-yl)boronic acid (CAS 1219628-86-0)
- 3,5-Dichloro-2-(difluoromethoxy)phenacyl bromide (CAS 1803832-65-6)
- 3-((5-Amino-1,3,4-thiadiazol-2-yl)thio)-N-cyclohexylpropanamide (CAS 1030772-85-0)
- 4-(Phenylcarbonyl)benzeneboronic acid pinacol ester, 97% (CAS 269410-03-9)
- 3-Ethynylpyrrolidin-3-ol (CAS 167406-88-4)
- 6-Oxabicyclo[3.2.1]oct-3-en-7-one (CAS 4720-83-6)
- H-Arg-AMC hydrochloride salt (CAS 70274-89-4)
- 1-(6-amino-2,3-dihydro-1H-indol-1-yl)-2-(3-methoxyphenyl)ethan-1-one (CAS 1021135-13-6)
- 5-Bromo-2-fluoroisonicotinonitrile (CAS 1805584-19-3)
- Semaglutide impurity 47 (CAS CATO-C4X-222647)
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