Ethyl (E)-2-cyano-2-(2-oxoindolin-3-ylidene)acetate CAS 14003-19-1
| CAS No. | 14003-19-1 |
| Molecular Formula | C13H10N2O3 |
| Molecular Weight | 242.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Ethyl (E)-2-cyano-2-(2-oxoindolin-3-ylidene)acetate 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 (E)-2-cyano-2-(2-oxoindolin-3-ylidene)acetate (CAS 14003-19-1), molecular formula C13H10N2O3 and molecular weight 242.23 g/mol, is a CATO reference standard with documented purity and traceability.
Ethyl (E)-2-cyano-2-(2-oxoindolin-3-ylidene)acetate (C13H10N2O3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C13H10N2O3 |
| Molecular Weight | 242.23 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 DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 2 |
Recommended Standards
- (Z)-Ethyl 2-cyano-2-(2-oxoindolin-3-ylidene)acetate (CAS 14003-18-0)
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