4-(Propan-2-yl)-2,3-dihydro-1H-indole-2,3-dione CAS 66232-59-5
| CAS No. | 66232-59-5 |
| Molecular Formula | C11H11NO2 |
| Molecular Weight | 189.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(Propan-2-yl)-2,3-dihydro-1H-indole-2,3-dione (C11H11NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
4-(Propan-2-yl)-2,3-dihydro-1H-indole-2,3-dione (CAS 66232-59-5) is a high-purity analytical reference standard with the molecular formula C11H11NO2 and a molecular weight of 189.21 g/mol.
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), 4-(Propan-2-yl)-2,3-dihydro-1H-indole-2,3-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 | C11H11NO2 |
| Molecular Weight | 189.21 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 1 |
Related Propan Standards
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- 1-(Propan-2-yl)-1h-imidazole-4-sulfonamide (CAS 1423029-76-8)
- 2-methyl-1-(propan-2-yl)-1H-1,3-benzodiazol-5-amine (CAS 1249777-45-4)
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Recommended Standards
- 4-(Oxiran-2-ylmethoxy)-1H-indole (CAS 35308-87-3)
- 4,4-Dimethylisoquinoline-1,3(2H,4H)-dione (CAS 5488-36-8)
- 4-(Hydroxymethyl)-1-methylquinolin-2(1H)-one (CAS 35982-84-4)
- 4,5-Dimethylindole-2-carboxylic Acid (CAS 50536-47-5)
- 5-Methoxy-1H-indole-1-carbaldehyde (CAS 78827-86-8)
- 4-[(4-Chlorobenzyl)oxy]-3-ethoxybenzoyl chloride (CAS 1160251-15-9)
- (6-Methoxy-2-methylpyridin-3-yl)methanamine dihydrochloride (CAS 2411641-63-7)
- Empagliflozin-d4 (CAS CATO-C4X-106561)
- 2-(4-Hydroxy-1H-indol-3-yl)acetic Acid (CAS 56395-08-5)
- 7-Chloroquinoline 1-oxide (CAS 22614-94-4)
- 3-Bromo-5-methylsulfanylpyridine (CAS 142137-18-6)
- N-(Isoquinolin-1-yl)acetamide (CAS 51640-00-7)
- (2E)-1-{4-[(2H-1,3-benzodioxol-5-yl)methyl]piperazin-1-yl}-3-(2-methoxyphenyl)-2-phenylprop-2-en-1-one (CAS 478064-17-4)
- Semaglutide impurity 75 (CAS CATO-C4X-222675)
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