1-(4-Chloro-benzenesulfonyl)-cyclopentane-carboxylic acid CAS 505071-95-4
| CAS No. | 505071-95-4 |
| Molecular Formula | C12H13ClO4S |
| Molecular Weight | 288.75 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1-(4-Chloro-benzenesulfonyl)-cyclopentane-carboxylic acid.
CATO supplies 1-(4-Chloro-benzenesulfonyl)-cyclopentane-carboxylic acid (CAS 505071-95-4), a certified reference material (molecular formula C12H13ClO4S, MW 288.75 g/mol) for analytical method development and quality control.
1-(4-Chloro-benzenesulfonyl)-cyclopentane-carboxylic acid (C12H13ClO4S) 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, its high carbon-to-hydrogen ratio confers good lipid solubility, 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).
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 | C12H13ClO4S |
| Molecular Weight | 288.75 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chloro Standards
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- 2-(2-Chloro-6-fluorophenyl)-2-(1H-indol-3-yl)ethan-1-amine (CAS 881044-31-1)
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Recommended Standards
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- 3-(2-Methyl-4-oxoquinazolin-3(4H)-yl)-2-phenylthiazolidin-4-one (CAS 114406-57-4)
- 2-Hydroxy-7-(methylthio)quinoline-3-carbaldehyde (CAS 873300-63-1)
- 2,2-Dihydroxy-1-(4-methoxyphenyl)ethan-1-one (CAS 16208-17-6)
- 5-((Methylamino)methyl)furan-2-carboxylic acid (CAS 893740-52-8)
- N-(2-Propylaminoethyl)-4-nitroaniline (CAS 1488659-82-0)
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- 5-Isopropyl-1H-benzo[d]imidazol-2(3H)-one (CAS 103151-03-7)
- 3-chloro-6-cyclopropylpyridazine (CAS 1046816-38-9)
- Neuropeptide Y (13-36) (porcine) (CAS 113662-54-7)
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