[(3Z)-2-Oxo-1-phenyl-2,3-dihydro-1H-indol-3-ylidene]amino 3-methylbutanoate CAS 478261-18-6

Purity 97%+In StockPharmaceutical Standards
CAS No.478261-18-6
Molecular FormulaC19H18N2O3
Molecular Weight322.36 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

[(3Z)-2-Oxo-1-phenyl-2,3-dihydro-1H-indol-3-ylidene]amino 3-methylbutanoate CAS 478261-18-6 chemical structure

Description

The occurrence of [(3Z)-2-Oxo-1-phenyl-2,3-dihydro-1H-indol-3-ylidene]amino 3-methylbutanoate is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies [(3Z)-2-Oxo-1-phenyl-2,3-dihydro-1H-indol-3-ylidene]amino 3-methylbutanoate (CAS 478261-18-6), a certified reference material (molecular formula C19H18N2O3, MW 322.36 g/mol) for analytical method development and quality control.

[(3Z)-2-Oxo-1-phenyl-2,3-dihydro-1H-indol-3-ylidene]amino 3-methylbutanoate (C19H18N2O3) contains a steroid core, 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.

As a certified reference material (CRM), [(3Z)-2-Oxo-1-phenyl-2,3-dihydro-1H-indol-3-ylidene]amino 3-methylbutanoate 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 FormulaC19H18N2O3
Molecular Weight322.36 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Nitrogen Atoms2

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