4-chloro-2-methyl-benzenesulfonyl chloride CAS 56157-92-7
| CAS No. | 56157-92-7 |
| Molecular Formula | C7H12Cl2O2S |
| Molecular Weight | 231.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 4-chloro-2-methyl-benzenesulfonyl chloride (CAS 56157-92-7), a certified reference material (molecular formula C7H12Cl2O2S, MW 231.14 g/mol) for analytical method development and quality control.
The molecular framework of 4-chloro-2-methyl-benzenesulfonyl chloride (C7H12Cl2O2S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C7H12Cl2O2S |
| Molecular Weight | 231.14 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 | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related chloro Standards
- 2-chloro-4-methylbenzene-1-sulfonyl chloride (CAS 55311-94-9)
- 2-chloro-6-methylbenzene-1-sulfonyl chloride (CAS 25300-37-2)
- 5-Chloro-7-(chloromethyl)-2,2-dimethyl-2,3-dihydrobenzofuran (CAS 1234844-89-3)
- 5-Chloro-7-(chloromethyl)-3,3-dimethyl-2,3-dihydrobenzofuran (CAS 1234847-20-1)
- 5-Chloro-4-methylthiophene-2-sulfonyl Chloride (CAS 1353435-17-2)
- 4-Chloro-2-(1-chloroethyl)-6-cyclobutylpyrimidine (CAS 1427023-92-4)
- 3-Chloro-4-methylthiophene-2-sulfonyl chloride (CAS 2229137-51-1)
- 4-Chloro-3-methylthiophene-2-sulfonyl chloride (CAS 2855942-84-4)
Recommended Standards
- Methyl (4-nitrophenyl) methylphosphonate (CAS 7284-49-3)
- Pyridoxine Impurity 20 (CAS 36944-85-1)
- 2-(5-Fluoro-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-1-carboxamido)acetic acid (CAS 70767-70-3)
- 6966-45-6 A836593 trisodium; (3Z)-3-[(E)-[4-[bis(oxidanidyl)amino]-6-oxidanylidene-cyclohexa-2,4-dien-1-ylidene]hydrazinylidene]-4-oxidanylidene-naphthalene-1-sulfonate; chromium(3+); 3-[(4-nitro-2-oxidanidyl-phenyl)diazenyl]-4-oxidanidyl-naphthalene-1-sulfonate trisodium; chromium(3+); (3Z)-3-[(E)-[4-(dioxidoamino)-6-oxo-1-cyclohexa-2,4-dienylidene]hydrazinylidene]-4-oxo-1-naphthalenesulfonate; 3-(4-nitro-2-oxidophenyl)azo-4-oxido-1-naphthalenesulfonate (CAS 6966-45-6)
- 2-Cyclopropyl-2-(2,2,2-trifluoroacetamido)propanoic acid (CAS 1177328-28-7)
- Methyl (3aR,6aR)-hexahydrocyclopenta[c]pyrrole-3a(1H)-carboxylate (CAS 2089245-31-6)
- Sodium 1-methyl-1h-imidazole-2-carboxylate (CAS 1221722-24-2)
- 781-73-7 265603H216 2-Acetylfluorene Ethanone, 1-(9H-fluoren-2-yl)- (9CI) Fluoren-2-yl methyl ketone Ketone, fluoren-2-yl methyl 4-07-00-01677 (Beilstein Handbook Reference) 2-Acetofluorene BRN 1871711 EINECS 212-310-5 Ethanone, 1-(9H-fluoren-2-yl) 2-Fluorenyl methyl ketone NSC 12351 UNII-265603H216 (CAS 781-73-7)
- 4-Iodo-5-methoxy-2-nitroaniline (CAS 335349-66-1)
- 2-Hydrazinyl-3H-indole (CAS 86691-39-6)
- (r)-2-((Tert-butoxycarbonyl)amino)-3-(3-methylpyridin-2-yl)propanoic acid (CAS 1354970-49-2)
- 7,8-Dimethoxy-2-methyl-4H-chromen-4-one (CAS 56100-47-1)
- N-((tetrahydro-2H-pyran-4-yl)methyl)cyclohexanamine (CAS 1250562-92-5)
- Semaglutide Impurity 2 (CAS CATO-C4X-22262)
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