2-[(4-Butyl-2-oxo-2H-chromen-7-yl)oxy]propanoic acid CAS 428503-46-2
| CAS No. | 428503-46-2 |
| Molecular Formula | C16H18O5 |
| Molecular Weight | 290.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2-[(4-Butyl-2-oxo-2H-chromen-7-yl)oxy]propanoic acid is closely related to a flavonoid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2-[(4-Butyl-2-oxo-2H-chromen-7-yl)oxy]propanoic acid (CAS 428503-46-2), molecular formula C16H18O5 and molecular weight 290.31 g/mol, is a CATO reference standard with documented purity and traceability.
2-[(4-Butyl-2-oxo-2H-chromen-7-yl)oxy]propanoic acid (C16H18O5) contains a flavonoid core, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C16H18O5 |
| Molecular Weight | 290.31 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
Recommended Standards
- 2,6-Diphenoxybenzaldehyde (CAS 460730-69-2)
- 2-[(4-butyl-8-methyl-2-oxo-2h-chromen-7-yl)oxy]acetic acid (CAS 428504-99-8)
- 2,6-Dimethoxy-N-(3-propylisoxazol-5-yl)benzamide (CAS 82558-93-8)
- 2-[(7-methyl-2-oxo-4-propyl-2h-chromen-5-yl)oxy]propanoic acid (CAS 843621-75-0)
- Glycyrrhetic Acid (CAS 471-53-4)
- 5-Methylcotinine-d3 (CAS 1217003-12-7)
- (1s,3s)-3-hydroxy-3-(pyridin-3-yl)cyclobutane-1-carboxylic acid (CAS 1807939-04-3)
- 3-(5-Bromothiophene-2-carbonyl)oxolane (CAS 1251236-94-8)
- 5-(2-thiazol-2-ylethynyl)-1,2-benzoxazol-3-one (CAS 2597587-89-6)
- Methyl 3-(Trifluoromethyl)pyridine-2-carboxylate (CAS 588702-69-6)
- 7-Chloro-3-(methylthio)-4H-benzo[e][1,2,4]thiadiazine 1,1-dioxide (CAS 40009-41-4)
- 2-((2-Methoxy-5-methylphenyl)amino)-2-oxoethyl 2-phenylbutanoate (CAS 380170-44-5)
- 2-(4-(((((9H-fluoren-9-yl)methoxy)carbonyl)amino)methyl)phenoxy)acetic acid (CAS 721939-61-3)
- Biotinyl-Neuropeptide Y (human, rat) trifluoroacetate salt (CAS 213779-13-6)
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