4-Chlorosulfonylphenoxyacetic Acid CAS 17641-39-3
| CAS No. | 17641-39-3 |
| Molecular Formula | C8H7ClO5S |
| Molecular Weight | 250.66 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.
4-Chlorosulfonylphenoxyacetic Acid (CAS 17641-39-3) is a high-purity analytical reference standard with the molecular formula C8H7ClO5S and a molecular weight of 250.66 g/mol.
Based on its molecular formula C8H7ClO5S, 4-Chlorosulfonylphenoxyacetic 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 250.66 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).
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 | C8H7ClO5S |
| Molecular Weight | 250.66 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.) | 1962 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Recommended Standards
- Bumetanide Impurity 8 (CAS 25317-76-4)
- 3-((4-Fluorophenyl)sulfonyl)propanoyl chloride (CAS 1017172-18-7)
- Salicylic Acid Impurity 27 (CAS 51904-91-7)
- 4-(trifluoromethyl)cyclohexane-1-sulfonyl chloride (CAS 1343053-89-3)
- tert-Butyl 4-(fluoromethyl)-4-hydroxyazepane-1-carboxylate (CAS 1824018-18-9)
- (S)-3-Aminoheptan-1-ol hydrochloride (CAS 1402805-31-5)
- 3-Bromo-5-chloro-2-fluorobenzaldehyde (CAS 1269440-82-5)
- 3-Isobutoxy-7-methylbenzofuran-2-carboxylic acid (CAS 1707727-73-8)
- Naphthalene-1,5-Disulfinic acid (CAS 300394-97-2)
- 2-Aminohexane-1,3-diol (CAS 50730-98-8)
- 3-(Trifluoromethyl)phenyl 1-methyl-3-(trifluoromethyl)-1H-pyrazole-4-carboxylate (CAS 320423-23-2)
- [1,3]Dioxolo[4,5-g]quinoline-7-carbaldehyde (CAS 363135-57-3)
- tert-Butyl (1R,2S)-2-hydroxycyclopentylcarbamate (CAS 1330069-67-4)
- Semaglutide Impurity 155 (x TFA Salt) (CAS CATO-C4X-2226155)
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