5-(Oxazol-5-yl)thiophene-2-sulfonyl chloride CAS 321309-40-4
| CAS No. | 321309-40-4 |
| Molecular Formula | C7H4ClNO3S2 |
| Molecular Weight | 249.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 5-(Oxazol-5-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.
CATO supplies 5-(Oxazol-5-yl)thiophene-2-sulfonyl chloride (CAS 321309-40-4), a certified reference material (molecular formula C7H4ClNO3S2, MW 249.69 g/mol) for analytical method development and quality control.
5-(Oxazol-5-yl)thiophene-2-sulfonyl chloride (C7H4ClNO3S2) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C7H4ClNO3S2 |
| Molecular Weight | 249.69 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, water |
| 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.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Oxazol Standards
- 2-{[(2-phenyl-1,3-oxazol-4-yl)methyl]sulfanyl}acetic acid (CAS 75595-27-6)
- 2-{[(3-methyl-1,2-oxazol-5-yl)methyl]sulfanyl}benzoic acid (CAS 873208-64-1)
- 2-{[(5-phenyl-1,2-oxazol-3-yl)methyl]sulfanyl}acetic acid (CAS 923212-56-0)
- 2-{[(5-methyl-1,2-oxazol-3-yl)methyl]sulfanyl}pyridine-3-carboxylic acid (CAS 855991-78-5)
- 3-[(5-Methyl-1,2-oxazol-3-yl)amino]-5-(2-methylpropyl)cyclohex-2-en-1-one (CAS 1024126-30-4)
- 1-(Oxazol-2-yl)dodecan-1-one (CAS 898758-48-0)
- Methyl 3-(oxazol-2-yl)phenethylcarbamate (CAS 1799434-52-8)
- 2-[(5-phenyl-1,2-oxazol-3-yl)formamido]acetic acid (CAS 176593-99-0)
Recommended Standards
- 5-(Isoxazol-5-yl)thiophene-2-sulfonyl chloride (CAS 551930-53-1)
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- 4-Chloro-N-cyclopropyl-2-fluorobenzenesulfonamide (CAS 794572-98-8)
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- (R)-3-((3-Chlorobenzyl)oxy)pyrrolidine hydrochloride (CAS 1264035-27-9)
- Sophorose (CAS 20429-79-2)
- 1187164-84-6 5-(2,3-Difluorobenzoyl)-2-methylpyridine MFCD13153246 (CAS 1187164-84-6)
- Picaridin Related Compound 5 (Diisopropyl Dicarbonate) (CAS 24425-00-1)
- 4-Hydroxymethyl-3-methoxyphenylboronic acid pinacol ester (CAS 1404094-91-2)
- 6-Chloro-9-(3-chloropropyl)-9H-purine (CAS 113379-30-9)
- (3Z)-3-{[(2,6-dichlorophenyl)methoxy]imino}-N-phenylpropanamide (CAS 303996-41-0)
- 4-(Difluoromethyl)-5-fluoro-2-methoxy-3-(trifluoromethyl)pyridine (CAS 1805565-74-5)
- 2-(Cyclobutoxy)ethanol (CAS 66017-79-6)
- Antifreeze Polypeptide 6 (winter flounder) trifluoroacetate salt (CAS 122604-16-4)
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