Ethyl 4-(3,4-dimethoxyphenyl)-2,4-dioxobutanoate CAS 70909-46-5
| CAS No. | 70909-46-5 |
| Molecular Formula | C14H16O6 |
| Molecular Weight | 280.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Ethyl 4-(3,4-dimethoxyphenyl)-2,4-dioxobutanoate (CAS 70909-46-5), molecular formula C14H16O6 and molecular weight 280.27 g/mol, is a CATO reference standard with documented purity and traceability.
Ethyl 4-(3,4-dimethoxyphenyl)-2,4-dioxobutanoate (C14H16O6) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic 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.
Physical & Chemical Properties
| Molecular Formula | C14H16O6 |
| Molecular Weight | 280.27 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.) | 1977 |
Related Ethyl Standards
- Ethyl 4-(2,4-dimethoxyphenyl)-2,4-dioxobutanoate (CAS 80081-75-0)
- Ethyl 4-(2,5-dimethoxyphenyl)-2,4-dioxobutanoate (CAS 70909-45-4)
- 2-((2,4-Dimethoxyphenyl)imino)-2,3-dihydrothiazole-4-carboxylic acid (CAS 728918-51-2)
- Ethyl 5-(3,4-dimethoxyphenyl)-5-oxovalerate (CAS 101499-71-2)
- Methyl 5-(3,4-dimethoxyphenyl)-3-methyl-5-oxopentanoate (CAS 1443341-37-4)
- 1-(2,3-Dimethoxyphenyl)-3-(1,3-dioxan-2-yl)propan-1-one (CAS 884504-40-9)
- 1-(2,4-Dimethoxyphenyl)-3-(1,3-dioxan-2-yl)propan-1-one (CAS 884504-41-0)
- 1-(2,5-Dimethoxyphenyl)-3-(1,3-dioxan-2-yl)propan-1-one (CAS 884504-42-1)
Recommended Standards
- Ethyl 9,10-dioxo-9,10-dihydroanthracene-1-carboxylate (CAS 32114-47-9)
- Ethyl 9,10-dioxo-9,10-dihydroanthracene-2-carboxylate (CAS 32114-49-1)
- Ethyl 2-(cyclopropylimino)-4-(trifluoromethyl)-2,3-dihydrothiazole-5-carboxylate (CAS 866769-74-6)
- Ethyl phthalyl ethyl glycolate (CAS 84-72-0)
- 2-(2-Methoxyphenyl)cyclopentan-1-ol (CAS 1250244-71-3)
- 2-Methyl-N-[4-(6-methyl-1,3-benzothiazol-2-yl)phenyl]propanamide (CAS 415938-05-5)
- 2,5-Difluoro-4-phenylpyridine (CAS 1806352-75-9)
- 4-(3,4-Dihydro-2h-1,5-benzodioxepine-7-sulfonamido)butanoic acid (CAS 781626-94-6)
- 3,5-Diphenyl-1H-pyrrole-2-carbohydrazide (CAS 314763-96-7)
- 5-Amino-1-ethyl-1h-pyrazole-4-carboxamide (CAS 145864-65-9)
- 1,2,9,9-Tetraethyl decanetetracarboxylate (CAS 86244-66-8)
- 3-(2-Carboxyethyl)-1H-indole-2-carboxylic acid (CAS 31529-28-9)
- (R)-cyclopropyl(3-fluoro-4-methoxyphenyl)methanamine (CAS 1213002-32-4)
- Semaglutide Impurity 139 (CAS CATO-C4X-2226139)
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