(R)-2-((R)-3-(4-Hydroxyphenyl)-2-((R)-pyrrolidine-2-carboxamido)propanamido)-3-methylbutanoic acid CAS 628282-03-1
| CAS No. | 628282-03-1 |
| Molecular Formula | C19H27N3O5 |
| Molecular Weight | 377.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies (R)-2-((R)-3-(4-Hydroxyphenyl)-2-((R)-pyrrolidine-2-carboxamido)propanamido)-3-methylbutanoic acid (CAS 628282-03-1), a certified reference material (molecular formula C19H27N3O5, MW 377.43 g/mol) for analytical method development and quality control.
(R)-2-((R)-3-(4-Hydroxyphenyl)-2-((R)-pyrrolidine-2-carboxamido)propanamido)-3-methylbutanoic acid (C19H27N3O5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C19H27N3O5 |
| Molecular Weight | 377.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 3 |
Recommended Standards
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