2-Chloro-5-(chlorosulfonyl)benzoic acid CAS 137-64-4
| CAS No. | 137-64-4 |
| Molecular Formula | C7H4Cl2O4S |
| Molecular Weight | 255.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-Chloro-5-(chlorosulfonyl)benzoic acid.
CATO supplies 2-Chloro-5-(chlorosulfonyl)benzoic acid (CAS 137-64-4), a certified reference material (molecular formula C7H4Cl2O4S, MW 255.08 g/mol) for analytical method development and quality control.
Based on its molecular formula C7H4Cl2O4S, 2-Chloro-5-(chlorosulfonyl)benzoic acid 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 255.08 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 2-Chloro-5-(chlorosulfonyl)benzoic acid 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 | C7H4Cl2O4S |
| Molecular Weight | 255.08 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 2-Chloro-4-(chlorosulfonyl)benzoic acid (CAS 61953-04-6)
- 3-Chloro-4-(chlorosulfonyl)benzoic acid (CAS 29872-68-2)
- 3-Chloro-5-(chlorosulfonyl)benzoic acid (CAS 53553-11-0)
- 4-Chloro-2-(chlorosulfonyl)benzoic acid (Bumetanide Impurity) (CAS 923137-49-9)
- 6-Chloro-N4-(4-chlorophenyl)pyrimidine-4,5-diamine (CAS 103505-49-3)
- 5-Chloro-2-(chloromethyl)-6-phenylpyridazin-3(2H)-one (CAS 1206156-64-0)
- 7-Chloro-6-(2-chloroethyl)-5-methylpyrazolo[1,5-a]pyrimidine-3-carbonitrile (CAS 129909-69-9)
- 2-chloro-6-(4-chlorophenoxy)-4-Pyridinamine (CAS 1639298-80-8)
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- Peptide Impurity 13 (CAS CATO-CPTD788813)
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