4-(chlorocarbonyl)benzenesulfonic acid CAS 89692-74-0
| CAS No. | 89692-74-0 |
| Molecular Formula | C7H5ClO4S |
| Molecular Weight | 220.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 220.63 g/mol gives 4-(chlorocarbonyl)benzenesulfonic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 4-(chlorocarbonyl)benzenesulfonic acid (CAS 89692-74-0), a certified reference material (molecular formula C7H5ClO4S, MW 220.63 g/mol) for analytical method development and quality control.
Structurally, 4-(chlorocarbonyl)benzenesulfonic acid (C7H5ClO4S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 220.63 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C7H5ClO4S |
| Molecular Weight | 220.63 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.) | 1982 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
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Recommended Standards
- 2H-1,3-benzodioxole-4-sulfonyl chloride (CAS 87473-88-9)
- 4-Chloro-3-formylbenzenesulfonic acid (CAS 60767-69-3)
- 2-Chloro-5-formylbenzenesulfonic acid (CAS 80284-63-5)
- Vonoprazan Impurity 306 (CAS CATO-C4X-1020306)
- (1-Acetyl-cyclobutyl)-carbamic acid tert-butyl ester (CAS 1257639-06-7)
- tert-Butyl N-{[(4-chloro-3-fluorophenyl)carbamoyl]methyl}carbamate (CAS 1822679-43-5)
- 3-(3-Methyl-5-(trifluoromethoxy)phenyl)propanoic acid (CAS 916420-57-0)
- 1-(Benzenesulfonyl)-1H-indol-2-ol (CAS 1881327-89-4)
- 2-(1,3-Benzodioxol-5-yl)-azepane (CAS 383130-37-8)
- 2-Ethyl-2-methyl-1,2,3,4-tetrahydro-quinolin-7-ylamine (CAS 201654-28-6)
- 2-(5,5-Dimethyl-2-oxooxolan-3-yl)acetic acid (CAS 412298-86-3)
- Buspirone EP Impurity C HCl (CAS CATO-C4X-125819)
- 4-Chloro-6-(3-fluorophenyl)-2-(1-methoxyethyl)pyrimidine (CAS 1710293-48-3)
- Stresscopin-Related Peptide (human) (CAS 348626-74-4)
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