o-Toluenesulfonyl Chloride (contains ca. 23% isomer) CAS 133-59-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 133-59-5 |
| Molecular Formula | C7H7ClO2S |
| Molecular Weight | 190.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Order o-Toluenesulfonyl Chloride (contains ca. 23% isomer) (CAS 133-59-5) pharmaceutical standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C7H7ClO2S. Molecular weight: 190.65 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C7H7ClO2S |
| Molecular Weight | 190.65 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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.) | 1957 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related o Standards
- p-Toluenesulfonyl Chloride (CAS 98-59-9)
- p-Toluenesulfonyl Hydrazide (CAS 1576-35-8)
- m-toluenesulfonyl chloride (CAS 1899-93-0)
- p-Toluenesulfonyl isocyanate (CAS 4083-64-1)
- 4-Toluenesulfonyl cyanide (CAS 19158-51-1)
- 455-16-3 4-Toluenesulfonyl fluoride Benzenesulfonyl fluoride, 4-methyl- 4-Methylbenzenesulfonyl fluoride p-Toluenesulfonyl fluoride p-Toluenesulphonyl fluoride 4-11-00-00375 (Beilstein Handbook Reference) BRN 2208423 EINECS 207-238-6 p-Methylbenzenesulfonyl fluoride p-Methylphenylsulfonyl fluoride NSC 2749 Phenylmethylsulfonyl fluoride Toluene-4-sulfonyl fluoride Toluene-p-sulphonyl fluoride 4-Tolylsulfonyl fluoride Tosyl fluoride (CAS 455-16-3)
- 1-(p-Toluenesulfonyl)aziridine 1-(p-Toluenesulfonyl)ethylenimine 1-(p-Tolylsulfonyl)aziridine 1-Tosylaziridine 1-[(4-Methylphenyl)sulfonyl]aziridine 3634-89-7 N-(p-Toluenesulfonyl)aziridine N-(p-Tolylsulfonyl)aziridine N-Tosylaziridine N-[(4-Methylphenyl)sulfonyl]aziridine N-p-Tosylaziridine (CAS 3634-89-7)
- 1-(P-Toluenesulfonyl)pyrrole-2-aldehyde (CAS 102619-05-6)
Recommended Standards
- 4-Chloro-2-methyl-5-(methylsulfinyl)pyrimidine (CAS 1314926-93-6)
- 2-Chloro-N-(thiazol-5-ylmethyl)acetamide (CAS 1353983-78-4)
- 4-Chloro-2-(dimethylamino)-1,3-thiazole-5-carbaldehyde (CAS 129865-54-9)
- N-(5-bromopyridin-3-yl)-4-methylbenzenesulfonamide (CAS 1216-97-3)
- n-(2-Cyanoethyl)-2-((2,5-difluorophenyl)thio)-N-methylacetamide (CAS 1154008-92-0)
- 1-(4-Chlorobenzyl)-N-methylpiperidin-4-amine hydrochloride (CAS 1261230-51-6)
- 2-Chloro-1,3,4,6,7,11b-hexahydro-2H-pyrido[2,1-a]isoquinoline (CAS 500549-14-4)
- 3,5-Bis(perfluorohexyl)pyrazole (CAS 1030269-33-0)
- 2-(2'-Hydroxyphenyl)benzimidazole 2-(2'-Oxyphenyl)benzimidazole 2-(2-Benzimidazolyl)phenol 2-(2-Hydroxyphenyl)benzimidazole 2-(o-Hydroxyphenyl)benzimidazole 2963-66-8 NSC-32819 NSC32819 Phenol, 2-(1H-benzimidazol-2-yl)- Phenol, o-2-benzimidazolyl- (CAS 2963-66-8)
- D-allo-Thr5-Semaglutide (CAS CATO-C4X-2226243)
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 13829788188 / jacky.chen@cato-chem.com