Ethyl 1-(2-ethoxy-2-oxoethyl)-1H-indole-2-carboxylate CAS 256931-80-3
| CAS No. | 256931-80-3 |
| Molecular Formula | C15H17NO4 |
| Molecular Weight | 275.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies Ethyl 1-(2-ethoxy-2-oxoethyl)-1H-indole-2-carboxylate (CAS 256931-80-3), a certified reference material (molecular formula C15H17NO4, MW 275.30 g/mol) for analytical method development and quality control.
Structurally, Ethyl 1-(2-ethoxy-2-oxoethyl)-1H-indole-2-carboxylate (C15H17NO4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 275.30 g/mol, it falls into the medium-molecular-weight range. 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).
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 | C15H17NO4 |
| Molecular Weight | 275.30 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.) | 2025 |
| Nitrogen Atoms | 1 |
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Recommended Standards
- Ethanol, 2,2',2''-nitrilotris-, 1,1',1''-triacetate (CAS 3002-18-4)
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- Dimethyl 3-(Boc-amino)pentanedioate (CAS 82803-55-2)
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- 6-(Trifluoromethoxy)picolinonitrile (CAS 1361696-28-7)
- 3-Amino-5-chloro-4-hydroxybenzoic acid (CAS 1042055-74-2)
- Fmoc-L-Tryptophan-<SUP>15</SUP>N<SUB>2</SUB> (CAS 1217472-80-4)
- 3-Amino-4-bromo-2-naphthoic acid (CAS 5043-27-6)
- 1,3,6-Trimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carbaldehyde (CAS 23941-84-6)
- 5-Bromo-2-methyl-4-methylsulfonylphenylhydrazine (CAS 1000018-33-6)
- (S)-5-((3-Benzylpiperazin-1-yl)sulfonyl)isoquinoline (CAS 936233-03-3)
- 1-(4-Chlorophenyl)-3-[(4-methoxyphenyl)sulfanyl]propan-1-one (CAS 320422-67-1)
- 1-[(1H-pyrazol-4-yl)carbonyl]-4-(pyridin-2-yl)piperazine (CAS 1153251-03-6)
- Semaglutide Impurity 149 (CAS CATO-C4X-2226149)
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