Ethyl 5-(5-methylthiophen-2-yl)isoxazole-3-carboxylate CAS 92288-66-9
| CAS No. | 92288-66-9 |
| Molecular Formula | C11H11NO3S |
| Molecular Weight | 237.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Ethyl 5-(5-methylthiophen-2-yl)isoxazole-3-carboxylate 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.
CATO supplies Ethyl 5-(5-methylthiophen-2-yl)isoxazole-3-carboxylate (CAS 92288-66-9), a certified reference material (molecular formula C11H11NO3S, MW 237.27 g/mol) for analytical method development and quality control.
Ethyl 5-(5-methylthiophen-2-yl)isoxazole-3-carboxylate (C11H11NO3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H11NO3S |
| Molecular Weight | 237.27 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- 1-(3-Methylthiophen-2-yl)-N-(thiophen-2-ylmethyl)ethan-1-amine (CAS 1341802-99-0)
- n-((5-Methylthiophen-2-yl)methyl)-2-(thiophen-2-yl)ethan-1-amine (CAS 871805-22-0)
- Ethyl 5-(5-methylthiophen-2-yl)-1,2,4-oxadiazole-3-carboxylate (CAS 1342498-21-8)
- 2-(5-Methylthiophen-2-yl)-2-(piperidin-1-yl)acetic acid (CAS 1248751-77-0)
- 1-((5-Methylthiophen-2-yl)methyl)piperidine-3-carboxylic acid (CAS 896052-07-6)
- 1-((5-Methylthiophen-2-yl)methyl)piperidine-4-carboxylic acid (CAS 901923-80-6)
- 5-(4-Ethyl-5-methylthiophen-3-yl)-4-methyl-4H-1,2,4-triazole-3-thiol (CAS 590376-88-8)
- 5-(5-Methylthiophen-3-yl)-4-propyl-4H-1,2,4-triazole-3-thiol (CAS 667436-25-1)
Recommended Standards
- Ethyl 3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-2-carboxylate (CAS 28731-96-6)
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- Ethyl 3-oxo-3,4-dihydro-2H-1,4-benzothiazine-6-carboxylate (CAS 204863-53-6)
- Methyl 2-(3-oxo-2,3-dihydro-4H-benzo[b][1,4]thiazin-4-yl)acetate (CAS 702670-17-5)
- 2,5-Furandione, polymer with 1,1'-oxybis[2-propanol] and 1,2-propanediol (CAS 68958-33-8)
- 1-methyl-3-(1-methyl-1H-pyrazol-4-yl)-1H-pyrazol-4-amine dihydrochloride (CAS 1795437-21-6)
- 2-Benzyl-2,3-dihydro-1H-isoindol-1-imine hydrobromide (CAS 1170894-75-3)
- 2-(2,5-Dimethylphenyl)-8-methylimidazo[1,2-a]pyridine (CAS 881040-62-6)
- 4-Cyclopropoxy-6-(trifluoromethyl)picolinonitrile (CAS 1243360-50-0)
- 1-Acetyl-3-methylpiperidin-4-one (CAS 1228450-13-2)
- Ethyl 3-(3-(tert-Butylthio)-1-(4-(5-fluoropyrimidin-2-yl)benzyl)-5-methoxy-1H-indol-2-yl)-2,2-dimethylpropanoate (CAS 1431698-04-2)
- 6-Bromospiro[3.3]heptan-2-one (CAS 2568281-76-3)
- 3,4-Dihydro-2H-1,5-benzodioxepin-7-acetonitrile (CAS 162665-09-0)
- Semaglutide impurity 45 (CAS CATO-C4X-222645)
Why CATO?
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