4,5-Diphenyl-1H-imidazol-2(5H)-one CAS 642-36-4
| CAS No. | 642-36-4 |
| Molecular Formula | C29H27N4 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4,5-Diphenyl-1H-imidazol-2(5H)-one 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.
4,5-Diphenyl-1H-imidazol-2(5H)-one (CAS 642-36-4), molecular formula C29H27N4C7H7O3S and molecular weight 602.75 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4,5-Diphenyl-1H-imidazol-2(5H)-one (C29H27N4C7H7O3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 22.0, corresponding to approximately 22 ring(s) or double-bond equivalent(s). With a molecular weight of 602.75 g/mol, it falls into the 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 | C29H27N4 C7H7O3S |
| Molecular Weight | 602.75 g/mol |
| 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 |
| Degree of Unsaturation (DBE) | 22.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
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- N-(2,4-dichloro-5-isopropoxyphenyl)-3-methoxybenzamide (CAS 338961-16-3)
- Cholecystokinin Octapeptide (1-3) (desulfated) H-Asp-Tyr-Met-OH (CAS 121880-94-2)
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