1-(2,5-Difluorophenyl)-2-(methylthio)ethan-1-one CAS 1178832-72-8
| CAS No. | 1178832-72-8 |
| Molecular Formula | C9H8F2OS |
| Molecular Weight | 202.22 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.
1-(2,5-Difluorophenyl)-2-(methylthio)ethan-1-one (CAS 1178832-72-8) is a high-purity analytical reference standard with the molecular formula C9H8F2OS and a molecular weight of 202.22 g/mol.
The molecular framework of 1-(2,5-Difluorophenyl)-2-(methylthio)ethan-1-one (C9H8F2OS) is characterized by sulfur-containing functionality, a hydroxyl group, an ether linkage, 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C9H8F2OS |
| Molecular Weight | 202.22 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 |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | F-containing |
| Sulfur Atoms | 1 |
Related Difluorophenyl Standards
- 1-((3,4-Difluorophenyl)thio)propan-2-one (CAS 1152913-89-7)
- 1-((2,5-Difluorophenyl)thio)propan-2-one (CAS 1152967-45-7)
- 1-((2,4-Difluorophenyl)thio)propan-2-one (CAS 1152970-42-7)
- 1-(3,4-Difluorophenyl)-2-(methylthio)ethan-1-one (CAS 1178315-96-2)
- 1-(2,6-Difluorophenyl)-2-(methylthio)ethan-1-one (CAS 1179725-39-3)
- 3-((3,4-Difluorophenyl)thio)propanal (CAS 1341477-06-2)
- 1-(2,4-Difluorophenyl)-2-(methylthio)ethan-1-one (CAS 192862-10-5)
- 1-(2,4-Difluorophenyl)-3-methylthiourea (CAS 452965-89-8)
Recommended Standards
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