5-(Ethoxymethylene)-3-methyl-2-thioxothiazolidin-4-one CAS 6630-58-6
| CAS No. | 6630-58-6 |
| Molecular Formula | C7H9NO2S2 |
| Molecular Weight | 203.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-(Ethoxymethylene)-3-methyl-2-thioxothiazolidin-4-one (CAS 6630-58-6), molecular formula C7H9NO2S2 and molecular weight 203.28 g/mol, is a CATO reference standard with documented purity and traceability.
5-(Ethoxymethylene)-3-methyl-2-thioxothiazolidin-4-one (C7H9NO2S2) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. 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.
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 | C7H9NO2S2 |
| Molecular Weight | 203.28 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
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Recommended Standards
- 5-(2-(4-Ethylphenyl)hydrazinyl)-3,4-dihydro-2H-pyrrole (CAS 734475-61-7)
- 5-(t-Boc-amino)-1-pentanol (CAS 75178-90-4)
- 5-(2-(2,6-Dimethylphenyl)hydrazinyl)-3,4-dihydro-2H-pyrrole (CAS 802617-97-6)
- 5-(tert-Butyl)-6-methyl-1H-indazol-3-amine (CAS 2416992-31-7)
- 4,4,4-Trifluoro-3-oxo-N-(m-tolyl)butanamide (CAS 663191-97-7)
- 3-(2,4-Difluorophenyl)-3-methylbutanoic acid (CAS 1368736-46-2)
- 1-methylpiperidin-3-amineHCl (CAS 42389-57-1)
- Scutellarin (CAS 27740-01-8)
- 1-(3-Chlorophenyl)-2-fluoroethan-1-amine hydrochloride (CAS 1639867-83-6)
- 5-Bromo-4-nitro-1H-indazole (CAS 2133005-85-1)
- 3-(5-Bromopentyl)thiophene (CAS 125878-90-2)
- 2-Nitro-1H-imidazole-4-carbaldehyde (CAS 89176-71-6)
- 1,3,5,7-Tetramethyl-3,5,6,7-tetrahydrobenzo[1,2-d:4,5-d']diimidazol-1-ium (CAS 741613-09-2)
- Semaglutide Impurity 143 (CAS CATO-C4X-2226143)
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