4,5-Dichloro-2-methyl-1H-imidazole CAS 15965-33-0
| CAS No. | 15965-33-0 |
| Molecular Formula | C4H4Cl2N2 |
| Molecular Weight | 150.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 150.99 g/mol gives 4,5-Dichloro-2-methyl-1H-imidazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4,5-Dichloro-2-methyl-1H-imidazole (CAS 15965-33-0), molecular formula C4H4Cl2N2 and molecular weight 150.99 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4,5-Dichloro-2-methyl-1H-imidazole (C4H4Cl2N2) is characterized by a nitrile group, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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), 4,5-Dichloro-2-methyl-1H-imidazole 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 | C4H4Cl2N2 |
| Molecular Weight | 150.99 g/mol |
| Appearance | 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 DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichloro Standards
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