p-Chlorosulfonyldihydrocinnamic acid CAS 63545-54-0
| CAS No. | 63545-54-0 |
| Molecular Formula | C9H9ClO4S |
| Molecular Weight | 248.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 248.68 g/mol gives p-Chlorosulfonyldihydrocinnamic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
p-Chlorosulfonyldihydrocinnamic acid (CAS 63545-54-0), molecular formula C9H9ClO4S and molecular weight 248.68 g/mol, is a CATO reference standard with documented purity and traceability.
p-Chlorosulfonyldihydrocinnamic acid (C9H9ClO4S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. It is notably hygroscopic, 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 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C9H9ClO4S |
| Molecular Weight | 248.68 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.) | 1975 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Recommended Standards
- Methyl 5-(chlorosulfonyl)-2-methylbenzoate (CAS 866358-17-0)
- 951886-18-3 3-Chloro-3'-fluoro-4'-methylbenzophenone MFCD09801617 (CAS 951886-18-3)
- Methyl 4-chloro-2-methanesulfonylbenzoate (CAS 773134-42-2)
- Chlorodi-p-tolylphosphine (CAS 1019-71-2)
- 1-(5-Methyl-2-propoxyphenyl)propan-1-one (CAS 1175745-09-1)
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- 2-Bromo-6-isobutoxynaphthalene (CAS 1363386-56-4)
- 2-((4-(tert-Butyl)phenyl)amino)nicotinic acid (CAS 1041599-80-7)
- (1-Methyl-1H-pyrrol-2-yl)methanol (CAS 52160-51-7)
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- Benzyl (3R,4R)-4-((tert-butoxycarbonyl)amino)-3-fluoropiperidine-1-carboxylate (CAS 1372857-83-4)
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- Octahydro-2h-1,4-benzothiazine, mixture of diastereomers (CAS 29442-16-8)
- Semaglutide Impurity 163 (x TFA Salt) (CAS CATO-C4X-2226163)
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