1-(Ethylthio)pyrrolidine-2,5-dione CAS 42839-22-5
| CAS No. | 42839-22-5 |
| Molecular Formula | C6H9NO2S |
| Molecular Weight | 159.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1-(Ethylthio)pyrrolidine-2,5-dione is closely related to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
1-(Ethylthio)pyrrolidine-2,5-dione (CAS 42839-22-5), molecular formula C6H9NO2S and molecular weight 159.21 g/mol, is a CATO reference standard with documented purity and traceability.
1-(Ethylthio)pyrrolidine-2,5-dione (C6H9NO2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C6H9NO2S |
| Molecular Weight | 159.21 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1969 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Ethylthio Standards
- 4-(Ethylthio)-5-methylisoxazol-3(2H)-one (CAS 107403-19-0)
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- 2-(Ethylthio)-4-methylthiazole (CAS 5316-68-7)
- 3-((Ethylthio)methyl)piperidine (CAS 1248515-68-5)
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Recommended Standards
- 1-(Ethylsulfonyl)-1H-pyrrole (CAS 885440-16-4)
- 1-(m-Tolyl)ethanol (CAS 25675-28-9)
- 1-(5-Mercapto-3-methyl-1H-1,2,4-triazol-4(5H)-yl)ethanone (CAS 65348-44-9)
- 1-Benzothiophene-5-carbonitrile (CAS 2060-63-1)
- 2-(Cyanomethyl)-7-phenylpyrazolo[1,5-a]pyrimidine-3-carbonitrile (CAS 338394-58-4)
- 5-fluorobicyclo[4.2.0]octa-1,3,5-triene-7-carbonitrile (CAS 1803591-07-2)
- 1,2-Dihydro-3H-cyclopenta[a]naphthalen-3-one (CAS 5838-88-0)
- 1-bromo-4-fluoro-cyclohexane (CAS 1780553-11-8)
- Sesamol formiate (CAS 80592-18-3)
- (R)-1-(4-benzyl-2-thioxooxazolidin-3-yl)ethan-1-one (CAS 694520-55-3)
- 7-Bromo-3-methyl-3,4-dihydro-2H-benzo[e][1,3]oxazin-2-one (CAS 2020021-56-9)
- Sodium hypophosphite hydrate (CAS 123333-67-5)
- tert-Butyl 4-(4-bromo-2-(trifluoromethyl)-phenyl)piperazine-1-carboxylate (CAS 1429889-76-8)
- Des-Ser32-Tirzepatide (CAS CATO-CPTD788942)
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