Ethyl 3-hydroxy-4,6-dimethoxy-2-oxoindoline-3-carboxylate CAS 23659-85-0
| CAS No. | 23659-85-0 |
| Molecular Formula | C13H15NO6 |
| Molecular Weight | 281.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Ethyl 3-hydroxy-4,6-dimethoxy-2-oxoindoline-3-carboxylate 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.
Ethyl 3-hydroxy-4,6-dimethoxy-2-oxoindoline-3-carboxylate (CAS 23659-85-0), molecular formula C13H15NO6 and molecular weight 281.26 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Ethyl 3-hydroxy-4,6-dimethoxy-2-oxoindoline-3-carboxylate (C13H15NO6) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 281.26 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C13H15NO6 |
| Molecular Weight | 281.26 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 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.) | 1963 |
| Nitrogen Atoms | 1 |
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- Ethyl 2-(3-allyl-2,4-dioxo-3,4-dihydroquinazolin-1(2H)-yl)acetate (CAS 1403564-10-2)
- N-(2-(Dimethylamino)ethyl)-5-isopropyl-3-oxo-3,5-dihydro-2H-pyrazolo[4,3-c]pyridine-7-carboxamide (CAS 1207001-73-7)
- Octadecan-1-amine acetate (CAS 2190-04-7)
- 2-(1-Methylhydrazinyl)-5-(trifluoromethyl)pyridine (CAS 163620-24-4)
- 4,5-Dihydro Cefradine Impurity (CAS 37051-00-6)
- Potassium 3-carbamoyl-2-[(2-chlorophenyl)formamido]propanoate (CAS 1028531-72-7)
- 1,2-dimethylpyrrolidine-3-carboxylic acid hydrochloride (CAS 1795283-70-3)
- Semaglutide impurity 289 (CAS CATO-C4X-2226289)
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