4-(3,4-Dimethoxyphenyl)-2-oxobut-3-enoic acid CAS 65152-30-9
| CAS No. | 65152-30-9 |
| Molecular Formula | C12H12O5 |
| Molecular Weight | 236.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(3,4-Dimethoxyphenyl)-2-oxobut-3-enoic acid (CAS 65152-30-9) is a high-purity analytical reference standard with the molecular formula C12H12O5 and a molecular weight of 236.22 g/mol.
4-(3,4-Dimethoxyphenyl)-2-oxobut-3-enoic acid (C12H12O5) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, 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).
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.
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 | C12H12O5 |
| Molecular Weight | 236.22 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 1975 |
Related Dimethoxyphenyl Standards
- (E)-4-(2,4-Dimethoxyphenyl)-4-oxo-2-butenoic acid (CAS 78149-70-9)
- (E)-4-(3,4-Dimethoxyphenyl)-4-oxobut-2-enoic acid (CAS 80937-23-1)
- 4-(3,4-Dimethoxyphenyl)-4-oxobut-2-enoic acid (CAS 57045-33-7)
- 5-(2,4-dimethoxyphenyl)imidazolidine-2,4-dione (CAS 79003-60-4)
- 1-(3,4-Dimethoxyphenyl)-2,2,2-trifluoroethan-1-ol (CAS 131252-26-1)
- 1-(3,5-Dimethoxyphenyl)cyclobutanecarboxylic Acid (CAS 1260666-79-2)
- 1-[(3,4-dimethoxyphenyl)methyl]cyclopropane-1-carboxylic acid (CAS 1267218-80-3)
- 1-(3,4-Dimethoxyphenyl)cyclobutanecarboxylic Acid (CAS 147406-22-2)
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