2-[2-(1-methyl-1H-indol-3-yl)ethyl]-2,3-dihydro-1H-isoindole-1,3-dione CAS 70369-20-9
| CAS No. | 70369-20-9 |
| Molecular Formula | C19H16N2O2 |
| Molecular Weight | 304.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-[2-(1-methyl-1H-indol-3-yl)ethyl]-2,3-dihydro-1H-isoindole-1,3-dione.
2-[2-(1-methyl-1H-indol-3-yl)ethyl]-2,3-dihydro-1H-isoindole-1,3-dione (CAS 70369-20-9), molecular formula C19H16N2O2 and molecular weight 304.34 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 2-[2-(1-methyl-1H-indol-3-yl)ethyl]-2,3-dihydro-1H-isoindole-1,3-dione (C19H16N2O2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C19H16N2O2 |
| Molecular Weight | 304.34 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 2 |
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