4-Cyclopropylbenzene-1-sulfonyl chloride CAS 167404-32-2
| CAS No. | 167404-32-2 |
| Molecular Formula | C9H9ClO2S |
| Molecular Weight | 216.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-Cyclopropylbenzene-1-sulfonyl chloride (CAS 167404-32-2), molecular formula C9H9ClO2S and molecular weight 216.68 g/mol, is a CATO reference standard with documented purity and traceability.
4-Cyclopropylbenzene-1-sulfonyl chloride (C9H9ClO2S) 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).
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 | C9H9ClO2S |
| Molecular Weight | 216.68 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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.) | 2004 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Cyclopropylbenzene Standards
- 4-Cyclopropylbenzene-1-sulfonyl fluoride (CAS 447460-34-6)
- N-cyclopropylbenzene-1,2-disulfonamide (CAS 105466-42-0)
- N-cyclopropylbenzene-1,4-disulfonamide (CAS 1094353-49-7)
- N-cyclopropylbenzene-1,3-disulfonamide (CAS 210826-63-4)
- 4-Cyclopropylbenzene-1,2-diamine (CAS 1116601-71-8)
- 1-n-Cyclopropylbenzene-1,2-diamine (CAS 118482-03-4)
- N1-Cyclopropylbenzene-1,4-diamine (CAS 170693-31-9)
- 1-n-Cyclopropylbenzene-1,3-diamine (CAS 884343-72-0)
Recommended Standards
- Methyl 4-chloro-3-(methylthio)benzoate (CAS 166811-70-7)
- 2-Cyclopropylbenzenesulfonyl chloride (CAS 1772586-39-6)
- Methyl 2-((4-chlorophenyl)thio)acetate (CAS 15446-15-8)
- Methyl 3-chloro-5-(methylsulfanyl)benzoate (CAS 1824578-68-8)
- 4-[(cyclopropylamino)methyl]-N-(2,2,2-trifluoroethyl)benzamide hydrochloride (CAS 1156895-98-5)
- 5-(1-Methylpyrrolidin-2-yl)pyridin-3-amine (CAS 64635-68-3)
- N-methyl-2-(pyrrolidin-1-yl)pyridin-3-amine (CAS 1341659-86-6)
- 4,5-Dichloro-2-methyl-1H-indole (CAS 479422-01-0)
- 1,3-Diphenylpropan-1-amine (CAS 5689-74-7)
- (Diaminophosphoryl)benzene (CAS 4707-88-4)
- 4-(2H-1,3-benzodioxol-5-yl)-5-cyclobutyl-2-methyl-2,3-dihydro-1H-pyrazol-3-imine (CAS 1355661-35-6)
- 1-((4-Cyclohexylphenyl)sulfonyl)-4-methylpiperidine (CAS 431069-52-2)
- (Z)-2-Hydrazono-5-methyl-2,3-dihydrobenzo[d]thiazole (CAS 80945-66-0)
- Semaglutide impurity 88 (CAS CATO-C4X-222688)
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