3,5-Dichlorobenzenesulfonyl Chloride CAS 705-21-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 705-21-5 |
| Molecular Formula | C6H3Cl3O2S |
| Molecular Weight | 245.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3,5-Dichlorobenzenesulfonyl Chloride (CAS 705-21-5), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C6H3Cl3O2S. Molecular weight: 245.51 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C6H3Cl3O2S |
| Molecular Weight | 245.51 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.) | 1957 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Dichlorobenzenesulfonyl Standards
- 2,4-Dichlorobenzenesulfonyl chloride (CAS 16271-33-3)
- 2,6-Dichlorobenzenesulfonyl chloride 2,6-dichlorobenzenesulfonylchloride 2,6-dichloro-benzenesulfonyl chloride 2,6-dichlorobenzene sulfonyl chloride 2,6-dichlorobenzenesulphonyl chloride 2,6-dichlorobenzene-1-sulfonyl chloride 2,6-Dichlorophenylsulfonyl chloride 6579-54-0 (CAS 6579-54-0)
- 2,3-Dichlorobenzenesulfonyl isocyanate (CAS 68984-06-5)
- 2,5-Dichlorobenzenesulfonyl isocyanate (CAS 7019-16-1)
- 2,6-Dichlorobenzenesulfonyl isocyanate (CAS 71103-41-8)
- 2,5-Dichlorobenzenesulfonyl fluoride (CAS 1373233-39-6)
- 2,4-Dichlorobenzenesulfonyl fluoride (CAS 26120-88-7)
- (Z)-2-(2,4-dichlorobenzenesulfonyl)-N'-hydroxyethanimidamide 1798403-96-9 MS-9669 (CAS 1798403-96-9)
Recommended Standards
- 2,3-Dichlorobenzene-1-sulfonyl chloride (CAS 82417-45-6)
- 5-bromo-2-chlorothiophene-3-carboxylic acid (CAS 189330-38-9)
- 2,2,2-Trichloro-n-(1,3-thiazol-2-yl)acetamide (CAS 53399-01-2)
- Ethyl 2-((7-(4-methoxyphenyl)-6,7-dihydro-5H-imidazo[2,1-c][1,2,4]triazol-3-yl)thio)propanoate (CAS 921584-92-1)
- 7-Fluorobenzo[e][1,2,4]triazin-3-amine (CAS 74916-44-2)
- (3-(Tert-butyl)-1,2,4-oxadiazol-5-yl)methanamine hydrochloride (CAS 1185081-01-9)
- Bongkrekic Acid (CAS 11076-19-0)
- 2,4-Dichloro-1-(difluoromethyl)benzene (CAS 43141-67-9)
- Sodium 2-cyanoethane-1-sulfonate (CAS 513-15-5)
- [Ser]8-Acetylated Semaglutide (CAS CATO-C4X-2226218)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 13829788188 / jacky.chen@cato-chem.com