Phenyl p-Toluenesulfonate CAS 640-60-8
| CAS No. | 640-60-8 |
| Molecular Formula | C13H12O3S |
| Molecular Weight | 248.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 248.30 g/mol gives Phenyl p-Toluenesulfonate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Phenyl p-Toluenesulfonate (CAS 640-60-8), a certified reference material (molecular formula C13H12O3S, MW 248.30 g/mol) for analytical method development and quality control.
Based on its molecular formula C13H12O3S, Phenyl p-Toluenesulfonate contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 248.30 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C13H12O3S |
| Molecular Weight | 248.30 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Sulfur Atoms | 1 |
Recommended Standards
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- (2-Methyl-3-(trifluoromethyl)phenyl)hydrazine (CAS 922511-03-3)
- 2-(2-Chloro-4-(trifluoromethyl)phenyl)-5-(2-chlorophenyl)-1H-1,2,4-triazol-3(2H)-one (CAS 1000575-12-1)
- Peptide Impurity 41 (CAS CATO-CPTD788841)
Why CATO?
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