(S)-5-(3-Methylisoxazol-5-yl)pyrrolidin-2-one CAS 163849-08-9
| CAS No. | 163849-08-9 |
| Molecular Formula | C8H10N2O2 |
| Molecular Weight | 166.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(S)-5-(3-Methylisoxazol-5-yl)pyrrolidin-2-one (CAS 163849-08-9) is a high-purity analytical reference standard with the molecular formula C8H10N2O2 and a molecular weight of 166.18 g/mol.
Based on its molecular formula C8H10N2O2, (S)-5-(3-Methylisoxazol-5-yl)pyrrolidin-2-one contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 166.18 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), (S)-5-(3-Methylisoxazol-5-yl)pyrrolidin-2-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C8H10N2O2 |
| Molecular Weight | 166.18 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2003 |
| Nitrogen Atoms | 2 |
Related S Standards
- N-((5-Methylisoxazol-3-yl)methyl)acrylamide (CAS 1248224-66-9)
- N-(3-Methylisoxazol-4-yl)cyclopropanecarboxamide (CAS 72592-16-6)
- N-(3-Methylisoxazol-5-yl)methacrylamide (CAS 86685-07-6)
- N-(5-Methylisoxazol-3-yl)cyclopropanecarboxamide (CAS 523989-42-6)
- N-(5-Methylisoxazol-4-yl)cyclopropanecarboxamide (CAS 600699-38-5)
- N-((5-methylisoxazol-3-yl)methyl)cyclobutanamine (CAS 1250217-15-2)
- (1-(5-Methylisoxazol-3-yl)cyclobutyl)methanamine (CAS 1352497-66-5)
- 5-(5-Methylisoxazol-3-yl)-1,3,4-oxadiazol-2-amine (CAS 725698-89-5)
Recommended Standards
- 4,6-Dimethyl-2-nitroaniline (CAS 1635-84-3)
- 3,5-Dimethyl-6,7-dihydroisoxazolo[4,5-c]pyridin-4(5H)-one (CAS 164223-46-5)
- N-(2-hydroxyethyl)picolinamide (CAS 16347-06-1)
- 2,5-Bis(methylamino)cyclohexa-2,5-diene-1,4-dione (CAS 1654-14-4)
- 1-(1,5-Dimethyl-1h-pyrazol-4-yl)-N-((tetrahydrofuran-2-yl)methyl)methanamine (CAS 1183665-45-3)
- 2-(4-Bromo-1H-pyrazol-3-yl)ethan-1-ol (CAS 1784625-70-2)
- 2,3-Dichloro-4-(trifluoromethyl)pyridine (CAS 89719-93-7)
- 3-(7-Methoxy-1H-indazol-3-yl)propanoic acid (CAS 639084-09-6)
- N-(2,4-Dimethoxyphenyl)benzofuro[3,2-d]pyrimidin-4-amine (CAS 847379-79-7)
- 5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole (CAS 903550-12-9)
- 1-[4-(bromomethyl)phenyl]pyrrolidine hydrobromide (CAS 1803588-83-1)
- (E)-2,5-dichloro-N'-(pyridin-3-ylmethylene)benzohydrazide (CAS 1351507-68-0)
- 1-Bromo-3-(4-chlorophenoxy)propan-2-one (CAS 177662-25-8)
- Semaglutide Impurity 143 (CAS CATO-C4X-2226143)
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