2,4,5-Tris(4-bromophenyl)-1H-imidazole CAS 36741-16-9
| CAS No. | 36741-16-9 |
| Molecular Formula | C21H13Br3N2 |
| Molecular Weight | 533.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2,4,5-Tris(4-bromophenyl)-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.
2,4,5-Tris(4-bromophenyl)-1H-imidazole (CAS 36741-16-9), molecular formula C21H13Br3N2 and molecular weight 533.05 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2,4,5-Tris(4-bromophenyl)-1H-imidazole (C21H13Br3N2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 15.0, corresponding to approximately 15 ring(s) or double-bond equivalent(s). With a molecular weight of 533.05 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C21H13Br3N2 |
| Molecular Weight | 533.05 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Tris Standards
- 3-{[(4-bromophenyl)methanesulfinyl]methyl}-5-{[(4-chlorophenyl)methyl]sulfanyl}-4-phenyl-4H-1,2,4-triazole (CAS 344274-99-3)
- 2-((5-(2-Bromophenyl)-4-phenyl-4H-1,2,4-triazol-3-yl)thio)-N-(2-(trifluoromethyl)phenyl)acetamide (CAS 332934-92-6)
- 3,4,5-Tris(4-bromophenyl)-4H-1,2,4-triazole (CAS 920984-66-3)
- 2-((4-(4-Bromophenyl)-5-(pyridin-3-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(2-(trifluoromethyl)phenyl)acetamide (CAS 477330-74-8)
- 2-((4-(4-Bromophenyl)-5-(pyridin-3-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(3-(trifluoromethyl)phenyl)acetamide (CAS 477329-98-9)
- 2-((4-(4-Bromophenyl)-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(2-(trifluoromethyl)phenyl)acetamide (CAS 477330-66-8)
- 2-((4-(4-Bromophenyl)-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(3-(trifluoromethyl)phenyl)acetamide (CAS 477329-21-8)
- N-(2-bromophenyl)-2-((6-(4-chlorophenyl)-3-cyano-4-phenylpyridin-2-yl)thio)acetamide (CAS 332127-41-0)
Recommended Standards
- Sodium (carboxymethyl)arsonate (CAS 126-82-9)
- IPrCuBr (CAS 915395-54-9)
- 7-Phenylacetamide-3-chloromethyl-3-cephem-4-carboxylic Acid Diphenylmethyl Ester (CAS 64308-63-0)
- 4-(4-(Benzyloxy)-2-methylbenzoyl)-5-(4-chlorophenyl)-1-(2-(diethylamino)ethyl)-3-hydroxy-1H-pyrrol-2(5H)-one (CAS 498569-22-5)
- tert-butyl 3-(aminomethyl)-3-cyanoazetidine-1-carboxylate (CAS 1374653-62-9)
- 5-Bromo-3-(4-methoxyphenyl)-1-methyl-1H-pyrazole (CAS 1188146-28-2)
- 4-Cyanopiperidine-1-sulfonyl chloride (CAS 1392803-35-8)
- N-(3-bromophenyl)-2-cyanoacetamide (CAS 63034-91-3)
- Tert-butyl (R)-2-(difluoromethyl)piperazine-1-carboxylate (CAS 2165480-74-8)
- 1-(3,5-Difluoro-2-isopropoxyphenyl)ethanone (CAS 1556311-29-5)
- 5-(Chlorodifluoromethyl)-1-(2-hydroxyethyl)-3-methyl-1h-pyrazole-4-carboxylic acid (CAS 1384427-30-8)
- (2-Formylpyridin-4-yl)boronic acid (CAS 903513-63-3)
- Bis(2-chlorophenyl) (3-methoxyphenyl)phosphoramidate (CAS 76168-16-6)
- Semaglutide Impurity 137 (x TFA Salt) (CAS CATO-C4X-2226137)
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