2-Methyl-1,3-bis(4-nitrobenzyl)-1H-imidazol-3-ium bromide CAS 1093637-20-7
| CAS No. | 1093637-20-7 |
| Molecular Formula | C18H17N4O4 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 2-Methyl-1,3-bis(4-nitrobenzyl)-1H-imidazol-3-ium bromide (CAS 1093637-20-7), a certified reference material (molecular formula C18H17N4O4Br, MW 433.26 g/mol) for analytical method development and quality control.
2-Methyl-1,3-bis(4-nitrobenzyl)-1H-imidazol-3-ium bromide (C18H17N4O4Br) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; 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.
As a certified reference material (CRM), 2-Methyl-1,3-bis(4-nitrobenzyl)-1H-imidazol-3-ium bromide 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 | C18H17N4O4 Br |
| Molecular Weight | 433.26 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 4 |
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- 3-(Hydroxymethyl)-2-methylphenylboronic acid (CAS 2121514-26-7)
- Semaglutide impurity 267 (CAS CATO-C4X-2226267)
Why CATO?
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