2-((3-Benzyl-4,7-dimethyl-2-oxo-2h-chromen-5-yl)oxy)propanoic acid CAS 428845-94-7
| CAS No. | 428845-94-7 |
| Molecular Formula | C21H20O5 |
| Molecular Weight | 352.38 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.
2-((3-Benzyl-4,7-dimethyl-2-oxo-2h-chromen-5-yl)oxy)propanoic acid (CAS 428845-94-7) is a high-purity analytical reference standard with the molecular formula C21H20O5 and a molecular weight of 352.38 g/mol.
Structurally, 2-((3-Benzyl-4,7-dimethyl-2-oxo-2h-chromen-5-yl)oxy)propanoic acid (C21H20O5) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 352.38 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C21H20O5 |
| Molecular Weight | 352.38 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
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- Semaglutide impurity 273 (CAS CATO-C4X-2226273)
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