[(3Z)-1-[(4-Methylphenyl)methyl]-2-oxo-2,3-dihydro-1H-indol-3-ylidene]amino 3-methylbutanoate CAS 303149-53-3
| CAS No. | 303149-53-3 |
| Molecular Formula | C21H22N2O3 |
| Molecular Weight | 350.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies [(3Z)-1-[(4-Methylphenyl)methyl]-2-oxo-2,3-dihydro-1H-indol-3-ylidene]amino 3-methylbutanoate (CAS 303149-53-3), a certified reference material (molecular formula C21H22N2O3, MW 350.41 g/mol) for analytical method development and quality control.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, [(3Z)-1-[(4-Methylphenyl)methyl]-2-oxo-2,3-dihydro-1H-indol-3-ylidene]amino 3-methylbutanoate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 350.41 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 | C21H22N2O3 |
| Molecular Weight | 350.41 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
Related Z Standards
- [(3Z)-1-[(4-Methylphenyl)methyl]-2-oxo-2,3-dihydro-1H-indol-3-ylidene]amino pentanoate (CAS 303149-55-5)
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Recommended Standards
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- (S)-Methyl 2-((tert-Butoxycarbonyl)amino)-3-(4-carbamoyl-2,6-dimethylphenyl)propanoate (CAS 623950-05-0)
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