(3,5-Dichlorophenyl)methanesulfonyl chloride CAS 163295-70-3
| CAS No. | 163295-70-3 |
| Molecular Formula | C7H5Cl3O2S |
| Molecular Weight | 259.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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 supplies (3,5-Dichlorophenyl)methanesulfonyl chloride (CAS 163295-70-3), a certified reference material (molecular formula C7H5Cl3O2S, MW 259.54 g/mol) for analytical method development and quality control.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, (3,5-Dichlorophenyl)methanesulfonyl chloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 259.54 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
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.) | 2003 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Dichlorophenyl Standards
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- (2,5-Dichlorophenyl)methanesulfonyl chloride (CAS 163295-71-4)
- (2,4-Dichlorophenyl)methanesulfonyl chloride (CAS 88691-50-3)
- (2,6-Dichlorophenyl)methanesulfonyl chloride (CAS 85952-31-4)
- (3,4-Dichlorophenyl)methanesulfonyl Chloride (CAS 85952-30-3)
- 2-(3,5-Dichlorophenyl)-2-(pyrrolidin-1-yl)ethan-1-amine (CAS 1183864-72-3)
- 1-(3,4-Dichlorophenyl)-3,3-dimethylpiperazine (CAS 1225768-12-6)
- 1-[(3,4-Dichlorophenyl)methyl]-2-methylpiperazine (CAS 1240572-61-5)
Recommended Standards
- 1-Chloro-5-fluoro-3-nitro-2-(trifluoromethoxy)benzene (CAS 1417569-90-4)
- 2,4-Dichloro-6-methylbenzenesulphonyl chloride (CAS 175278-26-9)
- 1-Chloro-2-fluoro-4-nitro-5-(trifluoromethoxy)benzene 1417569-75-5 (CAS 1417569-75-5)
- 2,5-Dichloro-3-methylbenzenesulfonyl chloride (CAS 1803835-89-3)
- 16,17-Didehydro 16-Demethyl Desoximetasone (CAS 1234572-33-8)
- 7-fluoro-1-(trifluoromethyl)-6,7-dihydro-5H-indolizin-8-one (CAS 2755402-04-9)
- 3'-(Pyrrolidin-1-ylsulfonyl)-5-(trifluoromethyl)-[1,1'-biphenyl]-3-carboxylic acid (CAS 1261916-29-3)
- 2-Oxopropyl 2-(4-nitrophenyl)acetate (CAS 7693-06-3)
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- Methyl 4-(thiophen-3-yl)butanoate (CAS 122417-23-6)
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- Sodium 1,4-dioxo-1,4-dihydronaphthalene-2-sulfonate (CAS 7045-83-2)
- 5,7-Dimethoxybenzo[d]isothiazol-3(2H)-one 1,1-dioxide (CAS 64404-51-9)
- Semaglutide impurity 277 (CAS CATO-C4X-2226277)
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