(S)-4-(Methylsulfonyl)pyrrolidin-2-one CAS 20182-97-2
| CAS No. | 20182-97-2 |
| Molecular Formula | C5H9NO3S |
| Molecular Weight | 163.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(S)-4-(Methylsulfonyl)pyrrolidin-2-one (CAS 20182-97-2) is a high-purity analytical reference standard with the molecular formula C5H9NO3S and a molecular weight of 163.19 g/mol.
Structurally, (S)-4-(Methylsulfonyl)pyrrolidin-2-one (C5H9NO3S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 163.19 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures (S)-4-(Methylsulfonyl)pyrrolidin-2-one 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.
Physical & Chemical Properties
| Molecular Formula | C5H9NO3S |
| Molecular Weight | 163.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related S Standards
- 1-(Methylsulfonyl)pyrrolidin-3-one (CAS 1270026-80-6)
- 3-(Methylsulfonyl)-6-oxa-3-azabicyclo[3.1.0]hexane (CAS 185423-66-9)
- 3-(Methylsulfonyl)-1,2,4-oxadiazol-5-amine (CAS 55864-41-0)
- 2-(Methylsulfonyl)cyclopentan-1-amine (CAS 1221723-17-6)
- (1-(Methylsulfonyl)cyclobutyl)methanamine (CAS 1249658-93-2)
- 2-((Methylsulfonyl)methyl)pyrrolidine (CAS 1342475-48-2)
- 2-(1-(Methylsulfonyl)cyclopropyl)ethan-1-amine (CAS 1658433-30-7)
- 2-Methyl-3-((methylsulfonyl)methyl)azetidine (CAS 2387600-44-2)
Recommended Standards
- (R)-Tiopronin (CAS 29335-92-0)
- (S)-4-fluoro-4-methyl-2-(methylamino)pentanoic acid (CAS 2165719-18-4)
- (R)-4-amino-3-fluoro-2-methylbutan-2-yl acetate (CAS 2242578-52-3)
- 1,2,3,6-Tetrahydropyridine-4-sulfonic acid (CAS 95596-29-5)
- 2-Chloro-3-(difluoromethyl)-6-hydroxyisonicotinonitrile (CAS 1805048-30-9)
- N-(2-Oxo-5-(trifluoromethyl)-1,2-dihydropyridin-3-yl)acetamide (CAS 1961206-09-6)
- 1-2-3-Tri-O-benzoyl-4-6-dideoxy-4-iodo-α-L-glucopyranose (CAS 132867-78-8)
- 1-(morpholin-4-yl)-2-nitroethen-1-amine (CAS 88954-48-7)
- 2-(3-(Cyclopentylcarbamoyl)-2-oxopyridin-1(2H)-yl)acetic acid (CAS 1361114-86-4)
- 2H-Imidazo[4,5-g]quinoline (CAS 50511-45-0)
- 2-(2-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)ethoxy)acetic acid (CAS 1354714-66-1)
- 4-(Aminomethyl)-2-cyano-6-(difluoromethoxy)benzoic acid (CAS 1805587-07-8)
- Rifapentine impurity 19 (CAS CATO-C4X-195919)
- Semaglutide impurity 104(Fmoc-D-His-Aib) (CAS 2171211-18-8)
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