4-Fluoro-3,5-dimethylbenzenethiol CAS 1443326-28-0
| CAS No. | 1443326-28-0 |
| Molecular Formula | C8H9FS |
| Molecular Weight | 156.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to sulfur-containing functionality, fluorine substitution, an aromatic ring system, 4-Fluoro-3,5-dimethylbenzenethiol is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 156.22 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
4-Fluoro-3,5-dimethylbenzenethiol (CAS 1443326-28-0) is a high-purity analytical reference standard with the molecular formula C8H9FS and a molecular weight of 156.22 g/mol.
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.
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 | C8H9FS |
| Molecular Weight | 156.22 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.) | 1992 |
| Halogen Content | F-containing |
| Sulfur Atoms | 1 |
Related Fluoro Standards
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- 2-Fluoro-3-methyl-benzenemethanethiol (CAS 357613-02-6)
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