1,4-Dichloro-2-fluoro-5-methylbenzene CAS 1365969-73-8
| CAS No. | 1365969-73-8 |
| Molecular Formula | C7H5Cl2F |
| Molecular Weight | 179.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1,4-Dichloro-2-fluoro-5-methylbenzene (CAS 1365969-73-8) is a high-purity analytical reference standard with the molecular formula C7H5Cl2F and a molecular weight of 179.02 g/mol.
Structurally, 1,4-Dichloro-2-fluoro-5-methylbenzene (C7H5Cl2F) contains fluorine/chlorine 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 179.02 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C7H5Cl2F |
| Molecular Weight | 179.02 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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.) | 1991 |
| Halogen Content | F/Cl-containing |
Related Dichloro Standards
- 1,2-Dichloro-5-fluoro-3-methylbenzene (CAS 1242339-71-4)
- 2,5-Dichloro-1-fluoro-3-methylbenzene (CAS 1242339-87-2)
- 3,5-Dichloro-2-fluorotoluene (CAS 146948-70-1)
- 2,4-Dichloro-3-fluorotoluene (CAS 1803777-52-7)
- 1,3-Dichloro-2-fluoro-5-methylbenzene (CAS 1803789-06-1)
- 3,4-Dichloro-5-fluorotoluene (CAS 1803820-64-5)
- 1,4-Dichloro-2-fluoro-3-methylbenzene (CAS 1804881-43-3)
- 2,6-Dichloro-4-fluorotoluene (CAS 1806281-21-9)
Recommended Standards
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