3,5-dichloro-4-methylbenzene-1-sulfonyl chloride CAS 24653-79-0
| CAS No. | 24653-79-0 |
| Molecular Formula | C7H5Cl3O2S |
| Molecular Weight | 259.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C7H5Cl3O2S, 3,5-dichloro-4-methylbenzene-1-sulfonyl chloride 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 259.54 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
3,5-dichloro-4-methylbenzene-1-sulfonyl chloride (CAS 24653-79-0), molecular formula C7H5Cl3O2S and molecular weight 259.54 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 3,5-dichloro-4-methylbenzene-1-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 | C7H5Cl3O2S |
| Molecular Weight | 259.54 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related dichloro Standards
- 4,5-Dichloro-2-methylbenzenesulfonyl chloride (CAS 1215295-88-7)
- 2,4-Dichloro-6-methylbenzenesulphonyl chloride (CAS 175278-26-9)
- 2,5-Dichloro-3-methylbenzenesulfonyl chloride (CAS 1803835-89-3)
- 2,3-Dichloro-5-methylbenzenesulfonyl chloride (CAS 871876-53-8)
- 2,4-Dichloro-3-methylbenzene-1-sulfonyl chloride (CAS 69145-58-0)
- 2,4-Dichloro-5-methylbenzenesulfonyl chloride (CAS 28286-86-4)
- 2,5-Dichloro-4-methylbenzene-1-sulfonyl chloride (CAS 473477-22-4)
- 2,6-Dichloro-3-methylbenzene-1-sulfonyl chloride (CAS 64063-38-3)
Recommended Standards
- 3,5-Dichloro-2-methylbenzenesulfonyl chloride (CAS 858004-29-2)
- methyl 4-bromo-5-chlorothiophene-2-carboxylate (CAS 1047630-72-7)
- 2,6-Dichloro-4-methylbenzene-1-sulfonyl chloride (CAS 90196-19-3)
- 4-Chloro-5-(difluoromethyl)-2-(trifluoromethyl)nicotinaldehyde (CAS 1804371-43-4)
- 2-Fluoropyridin-3-amine hydrochloride (CAS 1827-26-5)
- 2,4-D-1-Butyl Ester (CAS 94-80-4)
- 7-Propyl-3-(trifluoromethyl)benzo[d]isoxazol-6-ol (CAS 194608-88-3)
- N'-(4,6-dimethyl-3-(methylsulfonyl)pyridin-2-yl)-2,6-difluoro-N'-methylbenzohydrazide (CAS 341967-39-3)
- n-(1-Benzyl-1,2,3,4-tetrahydroquinolin-4-ylidene)hydroxylamine (CAS 1562499-09-5)
- 3-Chloro-6-ethynylisoquinoline (CAS 1578484-35-1)
- Methyl (R)-2-amino-2-cyclobutylacetate hydrochloride (CAS 1993188-94-5)
- 7-Chloro-5-morpholinoimidazo[1,2-c]pyrimidine-2-carboxylic acid (CAS 1639974-72-3)
- Letermovir impurity 128 (CAS CATO-C4X-2915128)
- Peptide Impurity 06 (CAS CATO-CPTD788806)
Why CATO?
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