4-(Isoxazol-5-yl)-2,5-dimethylthiophene-3-sulfonyl chloride CAS 924873-22-3
| CAS No. | 924873-22-3 |
| Molecular Formula | C9H8ClNO3S2 |
| Molecular Weight | 277.75 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 277.75 g/mol gives 4-(Isoxazol-5-yl)-2,5-dimethylthiophene-3-sulfonyl chloride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-(Isoxazol-5-yl)-2,5-dimethylthiophene-3-sulfonyl chloride (CAS 924873-22-3), molecular formula C9H8ClNO3S2 and molecular weight 277.75 g/mol, is a CATO reference standard with documented purity and traceability.
4-(Isoxazol-5-yl)-2,5-dimethylthiophene-3-sulfonyl chloride (C9H8ClNO3S2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. 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.
CATO manufactures 4-(Isoxazol-5-yl)-2,5-dimethylthiophene-3-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.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Isoxazol Standards
- 1-[(5-Methyl-isoxazol-3-ylcarbamoyl)-methyl]-6-oxo-1,6-dihydro-pyridine-3-carboxylic acid (CAS 1171917-11-5)
- 3-(5-Methyl-isoxazol-3-yl)-4-oxo-10-oxa-3-aza-tricyclo[5.2.1.0*1,5*]dec-8-ene-6-carboxylic acid (CAS 1087753-92-1)
- N1-(Isoxazol-3-yl)-N2-(2-methoxybenzyl)oxalamide (CAS 899743-92-1)
- N1-(Isoxazol-3-yl)-N2-(3-methoxybenzyl)oxalamide (CAS 899974-53-9)
- N1-(Isoxazol-3-yl)-N2-(4-methoxybenzyl)oxalamide (CAS 941921-43-3)
- N-(5-(Isoxazol-5-yl)-1,3,4-oxadiazol-2-yl)-1,5-dimethyl-1H-pyrazole-3-carboxamide (CAS 1013826-11-3)
- Methyl 3-(isoxazol-3-ylmethyl)-2-oxo-2,3-dihydrobenzo[d]oxazole-5-carboxylate (CAS 1020243-01-9)
- N-(Isoxazol-3-yl)-3-(pyridin-2-yloxy)benzamide (CAS 1796971-37-3)
Recommended Standards
- 4-(4-Chloro-6-methoxy-2-methylquinolin-3-yl)butan-2-one (CAS 64375-68-4)
- 4-Chloro-1-(4-methylphenyl)-N-propyl-1H-pyrazole-5-carboxamide (CAS 321571-53-3)
- 3-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-oxopropanenitrile (CAS 727704-77-0)
- 4-Chloro-2-(((4-methoxybenzyl)amino)methyl)phenol (CAS 827328-93-8)
- 4-Fluoro-N1-(2-furylmethyl)-1,2-benzenediamine (CAS 912770-58-2)
- 2-(4-Ethylphenyl)-6-methylquinoline-4-carbonyl chloride (CAS 1160253-51-9)
- 2-({[(3-cyanophenyl)carbamoyl]methyl}sulfanyl)benzoic acid (CAS 850020-92-7)
- 4-Hydroxyquinoline-8-acetic acid (CAS 1261631-50-8)
- 2-(4-Nitronaphthalen-1-yl)isoindoline-1,3-dione (CAS 106130-61-4)
- N-(1-(Ethylsulfonyl)-1,2,3,4-tetrahydroquinolin-6-yl)isobutyramide (CAS 946282-72-0)
- 4-(6-Nitro-3-pyridinyl)-benzoic acid (CAS 885476-90-4)
- Progesterone Impurity 40 (CAS 6615-00-5)
- 2,2,3,3,4,4,4-Heptafluorobutan-1-amine hydrochloride (CAS 2794-75-4)
- Anti-TF Antigen Peptide P30-1 trifluoroacetate salt (CAS 573664-50-3)
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