1,4-Dichloro-2-difluoromethoxy-3-fluorobenzene CAS 1803790-76-2
| CAS No. | 1803790-76-2 |
| Molecular Formula | C7H3Cl2F3O |
| Molecular Weight | 231.00 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.
1,4-Dichloro-2-difluoromethoxy-3-fluorobenzene (CAS 1803790-76-2) is a high-purity analytical reference standard with the molecular formula C7H3Cl2F3O and a molecular weight of 231.00 g/mol.
Based on its molecular formula C7H3Cl2F3O, 1,4-Dichloro-2-difluoromethoxy-3-fluorobenzene contains a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 231.00 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C7H3Cl2F3O |
| Molecular Weight | 231.00 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | F/Cl-containing |
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Recommended Standards
- 1,5-Dichloro-3-difluoromethoxy-2-fluorobenzene (CAS 1803714-51-3)
- 1,2-Dichloro-4-difluoromethoxy-3-fluorobenzene (CAS 1803806-50-9)
- 1,2-Dichloro-4-difluoromethoxy-5-fluorobenzene (CAS 1803714-46-6)
- 1,2-Dichloro-3-difluoromethoxy-4-fluorobenzene (CAS 1803831-95-9)
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- Semaglutide impurity 86 (CAS CATO-C4X-222686)
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