3-Fluorothioanisole 4-Methylbenzenesulfonic acid sodium salt 658-28-6 Toluene-4-sulfonic acid sodium salt p-Toluenesulfonic acid sodium salt CAS 658-28-6
| CAS No. | 658-28-6 |
| Molecular Formula | C7H7FS |
| Molecular Weight | 142.19 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.
3-Fluorothioanisole 4-Methylbenzenesulfonic acid sodium salt 658-28-6 Toluene-4-sulfonic acid sodium salt p-Toluenesulfonic acid sodium salt (CAS 658-28-6), molecular formula C7H7FS and molecular weight 142.19 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3-Fluorothioanisole 4-Methylbenzenesulfonic acid sodium salt 658-28-6 Toluene-4-sulfonic acid sodium salt p-Toluenesulfonic acid sodium salt (C7H7FS) is characterized by sulfur-containing functionality, fluorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 | C7H7FS |
| Molecular Weight | 142.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
| Sulfur Atoms | 1 |
Related Fluorothioanisole Standards
Recommended Standards
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