4-Fluoro-2-(methylsulfanyl)aniline CAS 439291-57-3
| CAS No. | 439291-57-3 |
| Molecular Formula | C7H8FNS |
| Molecular Weight | 157.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Fluoro-2-(methylsulfanyl)aniline (CAS 439291-57-3) is a high-purity analytical reference standard with the molecular formula C7H8FNS and a molecular weight of 157.21 g/mol.
Structurally, 4-Fluoro-2-(methylsulfanyl)aniline (C7H8FNS) contains a nitrile group, sulfur-containing functionality, fluorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 157.21 g/mol, it falls into the medium-molecular-weight range. 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).
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.
CATO manufactures 4-Fluoro-2-(methylsulfanyl)aniline under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H8FNS |
| Molecular Weight | 157.21 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Fluoro Standards
- 3-Fluoro-5-(methylthio)aniline (CAS 1184030-27-0)
- 6-Fluoro-2-methyl-3-(methylthio)pyridine (CAS 1204336-74-2)
- 7-Fluoro-4,5,6,7-tetrahydrothieno[3,2-c]pyridine (CAS 1391733-81-5)
- 2-Fluoro-3-((methylthio)methyl)pyridine (CAS 190197-89-8)
- 2-Fluoro-4-(methylthio)aniline (CAS 76180-33-1)
- 2-Fluoro-4,5,6,7-tetrahydrobenzo[d]thiazole (CAS 27225-19-0)
- 3-Fluoro-2-(methylthio)aniline (CAS 305811-07-8)
- 3-Fluoro-4-(methylsulfanyl)aniline (CAS 20901-69-3)
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- 4-Ethynyl-1-fluoro-2-nitrobenzene (CAS 1211528-74-3)
- Tert-butyl 4-(((2-chloropyrimidin-4-yl)oxy)methyl)piperidine-1-carboxylate (CAS 1121609-12-8)
- Monofucosyllacto-N-hexaose III (CAS 96656-34-7)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com