5-Methyl-N-(3-(methylcarbamoyl)thiophen-2-yl)isoxazole-3-carboxamide CAS 941903-28-2
| CAS No. | 941903-28-2 |
| Molecular Formula | C11H11N3O3S |
| Molecular Weight | 265.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5-Methyl-N-(3-(methylcarbamoyl)thiophen-2-yl)isoxazole-3-carboxamide.
5-Methyl-N-(3-(methylcarbamoyl)thiophen-2-yl)isoxazole-3-carboxamide (CAS 941903-28-2), molecular formula C11H11N3O3S and molecular weight 265.29 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 5-Methyl-N-(3-(methylcarbamoyl)thiophen-2-yl)isoxazole-3-carboxamide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 265.29 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
CATO manufactures 5-Methyl-N-(3-(methylcarbamoyl)thiophen-2-yl)isoxazole-3-carboxamide 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 | C11H11N3O3S |
| Molecular Weight | 265.29 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Recommended Standards
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- 7-Amino-2,3-dimethyl-5-(methylsulfonyl)pyrazolo[1,5-a]pyrimidine-6-carbonitrile (CAS 2798825-80-4)
- (3,5-Dichlorophenyl)(piperidin-1-yl)methanone (CAS 294194-11-9)
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- 6-Amino-4-fluoro-7-azaindole (CAS 1190322-89-4)
- 2-Ethyl-5-oxo-1-phenyl-2,5-dihydro-1H-pyrazole-3-carboxamide (CAS 133954-33-3)
- (3S,4S)-4-fluoropyrrolidin-3-ol hydrochloride (CAS 1909293-52-2)
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- 2-[2-(2-oxo-1,3-diazinan-1-yl)-1,3-thiazol-4-yl]acetic acid (CAS 1240527-48-3)
- Semaglutide impurity 109 (CAS CATO-C4X-2226109)
Why CATO?
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