5-(3,5-Dimethylisoxazol-4-yl)thiophene-2-sulfonyl chloride CAS 1268334-97-9
| CAS No. | 1268334-97-9 |
| Molecular Formula | C9H8ClNO3S2 |
| Molecular Weight | 277.75 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-(3,5-Dimethylisoxazol-4-yl)thiophene-2-sulfonyl chloride (CAS 1268334-97-9) is a high-purity analytical reference standard with the molecular formula C9H8ClNO3S2 and a molecular weight of 277.75 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, 5-(3,5-Dimethylisoxazol-4-yl)thiophene-2-sulfonyl chloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 277.75 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 manufactures 5-(3,5-Dimethylisoxazol-4-yl)thiophene-2-sulfonyl chloride 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 | C9H8ClNO3S2 |
| Molecular Weight | 277.75 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Dimethylisoxazol Standards
- 4-(3,4-Dimethylisoxazol-5-yl)thiophene-2-sulfonyl chloride (CAS 1279219-03-2)
- 5-(3,4-Dimethylisoxazol-5-yl)thiophene-2-sulfonyl chloride (CAS 1279219-52-1)
- (3,5-Dimethylisoxazol-4-yl)methyl 2-(methylthio)nicotinate (CAS 556030-17-2)
- N-(4-(((3,5-dimethylisoxazol-4-yl)methyl)thio)phenyl)acetamide (CAS 860649-65-6)
- 3-(((3,5-Dimethylisoxazol-4-yl)methoxy)methyl)-4-methoxybenzaldehyde (CAS 1119449-82-9)
- 1-((3,5-Dimethylisoxazol-4-yl)sulfonyl)pyrrolidine-3-carboxylic acid (CAS 1405775-54-3)
- 1-[(3,5-Dimethylisoxazol-4-yl)sulfonyl]proline (CAS 890169-54-7)
- (2E)-3-{4-[(3,5-Dimethylisoxazol-4-yl)methoxy]-phenyl}acrylic acid (CAS 1050884-51-9)
Recommended Standards
- 4-Chloro-3-(((4-methoxybenzyl)amino)methyl)pyridin-2-amine (CAS 1265637-61-3)
- 3-Chloro-4-(3-phenoxypropoxy)aniline (CAS 1269534-70-4)
- (1-(3-Chloroquinoxalin-2-yl)piperidin-4-yl)methanol (CAS 1261232-04-5)
- (1-(3-Chloroquinoxalin-2-yl)piperidin-2-yl)methanol (CAS 1261229-77-9)
- [1-(3-Methylbut-2-enyl)-1h-pyrazol-3-yl]amine (CAS 1003012-43-8)
- 2-(2,5-Dimethyl-1-(4-nitrophenyl)-1H-pyrrol-3-yl)-N,N-dimethyl-2-oxoacetamide (CAS 866156-50-5)
- 2-(2-Bromo-6-chlorophenyl)acetonitrile (CAS 76574-39-5)
- Encorafenib Impurity 3 (CAS CATO-C4X-32493)
- Ethyl 3-(N-acetylacetamido)-4,6-diphenylthieno[2,3-b]pyridine-2-carboxylate (CAS 58327-92-7)
- (6-(3-Cyclopropyl-1,2,4-oxadiazol-5-yl)-[1,2,4]triazolo[4,3-a]pyridin-3-yl)methanamine (CAS 1707566-36-6)
- 2-Chloro-5-(pyrrolidine-1-sulfonyl)pyridine (CAS 64614-51-3)
- 82304-99-2 InChI=1/C10H10O4/c1-2-14-10(13)7-3-4-9(12)8(5-7)6-11/h3-6,12H,2H2,1H benzoic acid, 3-formyl-4-hydroxy-, ethyl ester ethyl 3-formyl-4-hydroxybenzoate (CAS 82304-99-2)
- AcotiaMide Hydrochloride Trihydrate (CAS 773092-05-0)
- Heme iron polypeptide(Hematin) (CAS 14875-96-8)
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