4-(4-Methoxy-2,5-dimethyl-phenyl)-4-oxo-butyric acid CAS 4773-88-0
| CAS No. | 4773-88-0 |
| Molecular Formula | C13H16O4 |
| Molecular Weight | 236.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(4-Methoxy-2,5-dimethyl-phenyl)-4-oxo-butyric acid (C13H16O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, 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).
4-(4-Methoxy-2,5-dimethyl-phenyl)-4-oxo-butyric acid (CAS 4773-88-0) is a high-purity analytical reference standard with the molecular formula C13H16O4 and a molecular weight of 236.26 g/mol.
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.
As a certified reference material (CRM), 4-(4-Methoxy-2,5-dimethyl-phenyl)-4-oxo-butyric acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C13H16O4 |
| Molecular Weight | 236.26 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Methoxy Standards
- 4-(4-Methoxy-3,5-dimethylphenyl)-4-oxobutanoic acid (CAS 103234-38-4)
- Ethyl 3-(2-methoxy-5-methylphenyl)-3-oxopropanoate (CAS 1039961-29-9)
- Ethyl 2-(4-methoxy-3,5-dimethylphenyl)-2-oxoacetate (CAS 107642-57-9)
- 5-(3-Methoxy-phenyl)-3-oxo-pentanoi cacid methyl ester (CAS 109277-50-1)
- Methyl 2-[2-methoxy-4-(prop-1-en-1-yl)phenoxy]acetate (CAS 1158108-40-7)
- Ethyl 2-(4-methoxy-2,5-dimethylphenyl)-2-oxoacetate (CAS 1226237-40-6)
- Ethyl 3-(2-Methoxy-4-methylphenyl)-3-oxopropanoate (CAS 125041-96-5)
- Ethyl 3-(4-methoxy-2-methylphenyl)-3-oxopropanoate (CAS 1260862-76-7)
Recommended Standards
- 4-(3-Methoxyphenyl)oxane-4-carboxylic Acid (CAS 473706-26-2)
- 4-(4-Methoxyphenyl)tetrahydropyran-4-carboxylic Acid (CAS 3648-58-6)
- 4-(3-Isopropoxyphenyl)-4-oxobutanoic acid (CAS 845790-42-3)
- 4-(5-Ethyl-2-methoxyphenyl)-4-oxobutanoic acid (CAS 856810-56-5)
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- Toluene-3,5-d2 (CAS 16954-38-4)
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- (D-His1)-Exenatide trifluoroacetate salt (CAS 1678417-09-8)
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