Ethyl 3-(3-(2-ethoxy-2-oxoethyl)-1-methyl-1H-indol-2-yl)propanoate CAS 74120-22-2
| CAS No. | 74120-22-2 |
| Molecular Formula | C18H23NO4 |
| Molecular Weight | 317.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 3-(3-(2-ethoxy-2-oxoethyl)-1-methyl-1H-indol-2-yl)propanoate (CAS 74120-22-2), molecular formula C18H23NO4 and molecular weight 317.38 g/mol, is a CATO reference standard with documented purity and traceability.
Ethyl 3-(3-(2-ethoxy-2-oxoethyl)-1-methyl-1H-indol-2-yl)propanoate (C18H23NO4) contains a flavonoid core, an amide group, 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 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.
As a certified reference material (CRM), Ethyl 3-(3-(2-ethoxy-2-oxoethyl)-1-methyl-1H-indol-2-yl)propanoate 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 | C18H23NO4 |
| Molecular Weight | 317.38 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.) | 1978 |
| Nitrogen Atoms | 1 |
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Recommended Standards
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- Ethyl 2-(2-(4-isopropoxybenzyl)-6-methyl-4-oxo-1,4-dihydropyrimidin-5-yl)acetate (CAS 6520-76-9)
- Ethyl 5-methoxy-2-(piperidin-1-ylmethyl)benzofuran-3-carboxylate (CAS 380842-50-2)
- 6-Methoxy-1,4-dimethyl-9H-carbazole-9-carbaldehyde (CAS 103771-51-3)
- 1-(4-Methylpyridin-3-yl)ethan-1-one (CAS 51227-30-6)
- 2-(4-Methoxyphenyl)acetaldehyde (CAS 5703-26-4)
- [1,1'-Biphenyl]-2,4'-diol (CAS 611-62-1)
- 2-Methyl-2H-benzo[d][1,2,3]triazole-4,5-diamine (CAS 127491-01-4)
- 1-Butoxy-3-nitro-5-(trifluoromethoxy)benzene (CAS 1881330-87-5)
- 136099-52-0 2-(Bromomethyl)-1-methyl-1H-benzo[d]imidazole 2-(bromomethyl)-1-methyl-1h-benzimidazole 2-(bromomethyl)-1h-benzimidazole (CAS 136099-52-0)
- Tadalafil Impurity 120 (CAS CATO-C4X-1087120)
- 2,5-Dimethyl-DL-phenylalanine (CAS 103854-25-7)
- CGMP Dependent Kinase Inhibitor Peptide (CAS 82801-73-8)
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