(S)-2-((2S,3R)-3-((tert-Butoxycarbonyl)amino)-2-hydroxy-4-phenylbutanamido)-4-methylpentanoic acid CAS 87304-15-2
| CAS No. | 87304-15-2 |
| Molecular Formula | C21H32N2O6 |
| Molecular Weight | 408.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies (S)-2-((2S,3R)-3-((tert-Butoxycarbonyl)amino)-2-hydroxy-4-phenylbutanamido)-4-methylpentanoic acid (CAS 87304-15-2), a certified reference material (molecular formula C21H32N2O6, MW 408.49 g/mol) for analytical method development and quality control.
Structurally, (S)-2-((2S,3R)-3-((tert-Butoxycarbonyl)amino)-2-hydroxy-4-phenylbutanamido)-4-methylpentanoic acid (C21H32N2O6) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 408.49 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C21H32N2O6 |
| Molecular Weight | 408.49 g/mol |
| Appearance | Off-white to pale 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1981 |
| Nitrogen Atoms | 2 |
Recommended Standards
- (4R,4'R)-2,2'-(1,3-Dihydro-2H-inden-2-ylidene)bis[4,5-dihydro-4-phenyloxazole] (CAS 2757082-27-0)
- (S)-5,7-Dihydroxy-2-(4-hydroxy-3,5-bis(3-methylbut-2-en-1-yl)phenyl)chroman-4-one (CAS 77263-11-7)
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