| CAS No. | 33430-28-3 |
| Molecular Formula | C23H25N5O4 |
| Molecular Weight | 435.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Benzyl ((S)-1-(((S)-1-amino-1-oxo-3-phenylpropan-2-yl)amino)-3-(1H-imidazol-4-yl)-1-oxopropan-2-yl)carbamate (CAS 33430-28-3), molecular formula C23H25N5O4 and molecular weight 435.48 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Benzyl ((S)-1-(((S)-1-amino-1-oxo-3-phenylpropan-2-yl)amino)-3-(1H-imidazol-4-yl)-1-oxopropan-2-yl)carbamate (C23H25N5O4) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage. 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. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
| Molecular Formula | C23H25N5O4 |
| Molecular Weight | 435.48 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 5 |