1,2,3,5-Tetrachloro-4-methoxybenzene CAS 938-22-7
| CAS No. | 938-22-7 |
| Molecular Formula | C7H4Cl4O |
| Molecular Weight | 245.92 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 245.92 g/mol gives 1,2,3,5-Tetrachloro-4-methoxybenzene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1,2,3,5-Tetrachloro-4-methoxybenzene (CAS 938-22-7) is a high-purity analytical reference standard with the molecular formula C7H4Cl4O and a molecular weight of 245.92 g/mol.
1,2,3,5-Tetrachloro-4-methoxybenzene (C7H4Cl4O) contains a hydroxyl group, an ether linkage, 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. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 1,2,3,5-Tetrachloro-4-methoxybenzene meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C7H4Cl4O |
| Molecular Weight | 245.92 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| 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.) | 1957 |
| Halogen Content | Cl-containing |
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