2-(Ethoxymethylene)-1H-indene-1,3(2H)-dione CAS 59117-83-8
| CAS No. | 59117-83-8 |
| Molecular Formula | C12H10O3 |
| Molecular Weight | 202.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(Ethoxymethylene)-1H-indene-1,3(2H)-dione (CAS 59117-83-8) is a high-purity analytical reference standard with the molecular formula C12H10O3 and a molecular weight of 202.21 g/mol.
Structurally, 2-(Ethoxymethylene)-1H-indene-1,3(2H)-dione (C12H10O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. 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 202.21 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).
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), 2-(Ethoxymethylene)-1H-indene-1,3(2H)-dione 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 | C12H10O3 |
| Molecular Weight | 202.21 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 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
Related Ethoxymethylene Standards
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- 2-Bromo-1-(2-bromo-3,6-difluorophenyl)ethan-1-one (CAS 1807197-48-3)
- 2-Methyl-5H-pyrrolo[3,4-b]pyridin-7-amine (CAS 474554-83-1)
- 6-Cyano-4-fluoropicolinic acid (CAS 1393575-95-5)
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- Semaglutide Impurity 143 (CAS CATO-C4X-2226143)
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