L-Phenylalanyl-N-(di-1H-imidazoL-2-ylmethyl)-L-histidinamide CAS 666746-74-3
| CAS No. | 666746-74-3 |
| Molecular Formula | C22H25N9O2 |
| Molecular Weight | 447.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), L-Phenylalanyl-N-(di-1H-imidazoL-2-ylmethyl)-L-histidinamide 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.
L-Phenylalanyl-N-(di-1H-imidazoL-2-ylmethyl)-L-histidinamide (CAS 666746-74-3), molecular formula C22H25N9O2 and molecular weight 447.49 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C22H25N9O2, L-Phenylalanyl-N-(di-1H-imidazoL-2-ylmethyl)-L-histidinamide contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 447.49 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C22H25N9O2 |
| Molecular Weight | 447.49 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 9 |
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