Ethyl 3-(3,4,5-trimethoxyphenyl)propanoate CAS 70311-20-5
| CAS No. | 70311-20-5 |
| Molecular Formula | C14H20O5 |
| Molecular Weight | 268.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Ethyl 3-(3,4,5-trimethoxyphenyl)propanoate.
Ethyl 3-(3,4,5-trimethoxyphenyl)propanoate (CAS 70311-20-5), molecular formula C14H20O5 and molecular weight 268.31 g/mol, is a CATO reference standard with documented purity and traceability.
Ethyl 3-(3,4,5-trimethoxyphenyl)propanoate (C14H20O5) 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 presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C14H20O5 |
| Molecular Weight | 268.31 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
Related Ethyl Standards
- 5-(2,3,4-Trimethoxyphenyl)pentanoic acid (CAS 859785-14-1)
- 5-(3,4,5-Trimethoxyphenyl)-1,3,4-oxadiazole-2(3H)-thione (CAS 23269-92-3)
- 2-Oxo-2-(2,4,5-trimethoxyphenyl)ethyl acetate (CAS 41318-09-6)
- 4-(2,3,4-Trimethoxyphenyl)-4-oxobutyric acid (CAS 63213-41-2)
- 4-Oxo-4-(2,4,5-trimethoxyphenyl)butanoic acid (CAS 31914-19-9)
- 4-Oxo-4-(3,4,5-trimethoxyphenyl)butanoic acid (CAS 5101-00-8)
- 2-[(3,4,5-trimethoxyphenyl)formamido]acetic acid (CAS 40915-27-3)
- 5-(2,3,4-Trimethoxyphenyl)-1,3,4-thiadiazol-2-amine (CAS 299932-72-2)
Recommended Standards
- Ethyl 3-([1,1'-biphenyl]-4-yl)-3-oxopropanoate (CAS 57477-98-2)
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