3-Chloro-3H-2,1-benzoxathiole-1,1-dioxide CAS 25595-59-9
| CAS No. | 25595-59-9 |
| Molecular Formula | C7H5ClO3S |
| Molecular Weight | 204.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 204.63 g/mol gives 3-Chloro-3H-2,1-benzoxathiole-1,1-dioxide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 3-Chloro-3H-2,1-benzoxathiole-1,1-dioxide (CAS 25595-59-9), a certified reference material (molecular formula C7H5ClO3S, MW 204.63 g/mol) for analytical method development and quality control.
Based on its molecular formula C7H5ClO3S, 3-Chloro-3H-2,1-benzoxathiole-1,1-dioxide contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 204.63 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 3-Chloro-3H-2,1-benzoxathiole-1,1-dioxide 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.
Physical & Chemical Properties
| Molecular Formula | C7H5ClO3S |
| Molecular Weight | 204.63 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 1,1'',1'''-Trimethyl[4,2';4',4'';6',4''']quaterpyridinium trichloride (CAS 116196-03-3)
- N-(1,1,1-trifluoro-4-methylpentan-3-yl)thietan-3-amine (CAS 1867004-40-7)
- 2-(4-Amino-1H-pyrazol-1-yl)acetohydrazide hydrochloride (CAS 1256264-87-5)
- Fluralaner impurity 39 (CAS CATO-C4X-218039)
- 6-(Thiophen-2-yl)hexanoic acid (CAS 21010-07-1)
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