5-Chloro-3-(chlorosulfonyl)-2-methylbenzoic acid CAS 1423028-58-3
| CAS No. | 1423028-58-3 |
| Molecular Formula | C8H6Cl2O4S |
| Molecular Weight | 269.10 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.
5-Chloro-3-(chlorosulfonyl)-2-methylbenzoic acid (CAS 1423028-58-3), molecular formula C8H6Cl2O4S and molecular weight 269.10 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C8H6Cl2O4S, 5-Chloro-3-(chlorosulfonyl)-2-methylbenzoic 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 269.10 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), 5-Chloro-3-(chlorosulfonyl)-2-methylbenzoic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C8H6Cl2O4S |
| Molecular Weight | 269.10 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 |
| 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.) | 1991 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chloro Standards
- Methyl 4-chloro-3-(chlorosulfonyl)benzoate (CAS 1000933-19-6)
- Methyl 5-chloro-2-(chlorosulfonyl)benzoate (CAS 1119454-19-1)
- Methyl 3-chloro-5-(chlorosulfonyl)benzoate (CAS 1155083-83-2)
- 3-Chloro-5-(chlorosulfonyl)-4-methylbenzoic acid (CAS 1341830-84-9)
- 4-Chloro-3-(chlorosulfonyl)-5-methylbenzoic acid (CAS 1423024-38-7)
- 3-chloro-5-(chlorosulfonyl)-2-methylbenzoic acid (CAS 1702890-75-2)
- 6-Chloro-2,3-dihydro-1,4-benzodioxine-5-sulfonyl chloride (CAS 1785272-64-1)
- (3-Chloro-5-fluorophenyl)(3-chlorophenyl)methanone (CAS 844884-96-4)
Recommended Standards
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- 3,4-Dichloro-4'-fluorobenzophenone (CAS 157428-51-8)
- 3',4'-Dichloro-2-fluoro-[1,1'-biphenyl]-4-carbaldehyde (CAS 1361720-12-8)
- tert-Butyl 4-(2-chloropyrimidin-4-yloxy)naphthalen-1-ylcarbamate (CAS 1229607-86-6)
- 2′-Deoxy-5-methoxyuridine (CAS 37805-95-1)
- 1-{5-bromopyrrolo[2,1-f][1,2,4]triazin-2-yl}ethan-1-amine (CAS 1369114-43-1)
- H-Glu(OMe)-OMe · HCl (CAS 23150-65-4)
- Benzyl-[1-(5-methyl-furan-2-yl)-but-3-enyl]-amine hydrochloride (CAS 1052536-24-9)
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- Peptide Impurity 04 (CAS 2913424-91-4)
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