5-((Ethylsulfonyl)methyl)isoxazol-3(2H)-one CAS 89661-25-6
| CAS No. | 89661-25-6 |
| Molecular Formula | C6H9NO4S |
| Molecular Weight | 191.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, 5-((Ethylsulfonyl)methyl)isoxazol-3(2H)-one is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 191.20 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
CATO supplies 5-((Ethylsulfonyl)methyl)isoxazol-3(2H)-one (CAS 89661-25-6), a certified reference material (molecular formula C6H9NO4S, MW 191.20 g/mol) for analytical method development and quality control.
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 5-((Ethylsulfonyl)methyl)isoxazol-3(2H)-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 | C6H9NO4S |
| Molecular Weight | 191.20 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 | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Ethylsulfonyl Standards
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- 3-(Ethylsulfonyl)cyclohexan-1-amine (CAS 1340463-40-2)
- 2-((Ethylsulfonyl)methyl)piperidine (CAS 1706457-09-1)
- 2-ethylsulfonyl-2,5-diazabicyclo[4.1.0]heptane (CAS 2306278-09-9)
- 1-((Ethylsulfonyl)methyl)cyclopropane-1-carboxylic acid (CAS 1707567-81-4)
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- (s)-1-(Ethylsulfonyl)-2-methylpiperazine (CAS 1225062-96-3)
Recommended Standards
- 4-Fluoro-N-(furan-2-ylmethyl)aniline (CAS 51305-70-5)
- 5-(2-Fluorophenyl)-5-oxopentanenitrile (CAS 898767-33-4)
- 4-Difluoromethanesulfinylaniline (CAS 24906-88-5)
- 5-(4-Fluorophenyl)-1-methyl-1H-imidazol-2-amine (CAS 787586-82-7)
- 7-fluoro-6-(3,3,3-trifluoroprop-1-ynyl)-1H-quinazolin-4-one (CAS 2546453-89-6)
- 2-Bromofuran (stabilized with CaO) (CAS 584-12-3)
- Pramipexole Impurity 74 (CAS 1391053-80-7)
- (9H-Fluoren-9-yl)methyl (2-amino-2-oxoethyl)carbamate (CAS 115057-37-9)
- 2-(3-Bromo-1H-pyrazol-1-yl)-N,N-dimethylethan-1-amine (CAS 1849378-82-0)
- 2-Methyl-3-(methylthio)-4-(pyridin-2-yl)-3,5-dihydro-1H-pyrrolo[3,4-c]pyridine-1,6(2H)-dione (CAS 1269534-76-0)
- 1,1-Dimethylethyl (3S)-3-(4-iodo-1H-pyrazol-1-yl)-1-pyrrolidinecarboxylate (CAS 1454687-19-4)
- 2-Amino-5-(aminomethyl)-4-(difluoromethyl)nicotinonitrile (CAS 1805269-55-9)
- N-(4-Amino-2-methylphenyl)-3-isopropoxybenzamide (CAS 1020055-21-3)
- Semaglutide Impurity 143 (CAS CATO-C4X-2226143)
Why CATO?
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