| CAS No. | 124185-35-9 |
| Molecular Formula | C7H7ClFN |
| Molecular Weight | 159.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 159.59 g/mol gives 2-Chloro-4-fluoro-5-methylaniline distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-Chloro-4-fluoro-5-methylaniline (CAS 124185-35-9), molecular formula C7H7ClFN and molecular weight 159.59 g/mol, is a CATO reference standard with documented purity and traceability.
2-Chloro-4-fluoro-5-methylaniline (C7H7ClFN) contains a nitrile group, fluorine/chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 2-Chloro-4-fluoro-5-methylaniline 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.
| Molecular Formula | C7H7ClFN |
| Molecular Weight | 159.59 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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.) | 1992 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |