2-(5-Ethoxy-2-methyl-1H-indol-3-yl)acetic acid CAS 34024-46-9
| CAS No. | 34024-46-9 |
| Molecular Formula | C13H15NO3 |
| Molecular Weight | 233.26 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.
2-(5-Ethoxy-2-methyl-1H-indol-3-yl)acetic acid (CAS 34024-46-9) is a high-purity analytical reference standard with the molecular formula C13H15NO3 and a molecular weight of 233.26 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, 2-(5-Ethoxy-2-methyl-1H-indol-3-yl)acetic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 233.26 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C13H15NO3 |
| Molecular Weight | 233.26 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 1 |
Related Ethoxy Standards
- 4-Ethoxy-1-ethyl-1h-indole-2-carboxylic acid (CAS 1017062-78-0)
- Ethyl 4-ethoxy-1h-indole-2-carboxylate (CAS 1156857-24-7)
- Ethyl 5-ethoxy-1H-indole-2-carboxylate (CAS 16382-17-5)
- 2-Ethoxy-7-methoxy-8-methylquinolin-4-ol (CAS 872496-85-0)
- 5-Ethoxy-1,2-dimethyl-1h-indole-3-carboxylic acid (CAS 294195-10-1)
- Ethyl 6-ethoxy-1H-indole-2-carboxylate (CAS 26960-62-3)
- 5-(4-Ethoxy-3-methoxyphenyl)-3-methyl-1H-1,2,4-triazole (CAS 1416338-41-4)
- 8-ethoxy-4-hydroxyquinoline-3-carboxylic acid (CAS 111185-99-0)
Recommended Standards
- 2-(4-Oxopiperidin-1-yl)-2-phenylaceticacid (CAS 886363-69-5)
- 2-(5-Hydroxypentyl)isoindoline-1,3-dione (CAS 63273-48-3)
- 2-(4-Ethoxyphenyl)-4,5-dimethyloxazole 3-oxide (CAS 932779-62-9)
- 2-(5-Methylcyclohexa-1,5-dien-1-yl)ethyl isoxazole-4-carboxylate (CAS 199342-52-4)
- Thiodigalactoside (CAS 51555-87-4)
- 3-(4-Benzyloxy-3-methoxy-phenyl)-propionic acid ethyl ester (CAS 186895-24-9)
- 5464-68-6 Diethyl carbamoylmethylphosphonate Diethylphosphonoacetamide NSC-15422 NSC15422 Phosphonic acid, diethyl ester (CAS 5464-68-6)
- 4-[4-(Methylsulfonyl)-1-piperazinyl]aniline (CAS 442549-42-0)
- Azilsartan Impurity 116 (CAS CATO-C4X-1096116)
- Tosulur (CAS 87051-13-6)
- n-(1h-Benzo[d]imidazol-2-yl)-4-methylbenzenesulfonamide (CAS 13068-58-1)
- Methyl 3-(3-Hydroxy-4-methoxyphenyl)propanoate (CAS 129150-61-4)
- 5-Cyclopropyl-1-(1,2-dihydro-2-oxo-5-quinolinyl)-1H-pyrazole-4-carboxylic Acid Methyl Ester (CAS 372078-46-1)
- Liraglutide-d8 Tetratrifluoroacetate (CAS 204656-20-2 (non-labelled, free base))
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