4-chloro-2-sulfanylbenzoic acid CAS 20324-49-6
| CAS No. | 20324-49-6 |
| Molecular Formula | C7H5ClO2S |
| Molecular Weight | 188.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-chloro-2-sulfanylbenzoic acid (C7H5ClO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
4-chloro-2-sulfanylbenzoic acid (CAS 20324-49-6), molecular formula C7H5ClO2S and molecular weight 188.63 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 4-chloro-2-sulfanylbenzoic 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 | C7H5ClO2S |
| Molecular Weight | 188.63 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related chloro Standards
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Recommended Standards
- 3-Chloro-4-sulfanylbenzoic acid (CAS 33029-25-3)
- 5-Chloro-2-sulfanylbenzoic acid (CAS 20324-50-9)
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- 6-Chloro-2-(methylthio)pyrimidine-4-carbaldehyde (CAS 944901-14-8)
- N-(Aminomethyl)-N-carboxyglycine (CAS 125677-10-3)
- 6-(3-Bromophenyl)-1,3,5-triazine-2,4-diamine (CAS 30101-52-1)
- N1,N9-Bis(2-hydroxyethyl)nonanediamide (CAS 1675-66-7)
- 4H-Pyrazolo[3,4-d]pyrimidin-4-one, 3-[3-(benzoyloxy)-1-propyn-1-yl]-1,5-dihydro- (CAS 2591494-65-2)
- 2-((3,5-Dimethylbenzyl)amino)ethan-1-ol (CAS 343789-70-8)
- 1-(3-(2-Phenoxyethyl)-1,2,4-oxadiazol-5-yl)ethan-1-amine (CAS 1039992-74-9)
- Cyclohexyl(ethyl)dimethoxysilane (CAS 131390-30-2)
- 3-(2-Ethylbutoxy)propanoic acid (CAS 10213-74-8)
- L-N (CAS 36889-13-1)
- Tau Peptide (268-282) trifluoroacetate salt (CAS 330456-37-6)
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