4-Hydroxyoxindole CAS 13402-55-6

Purity 97%+In StockPharmaceutical Standards
CAS No.13402-55-6
Molecular FormulaC8H7NO2
Molecular Weight149.15 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-Hydroxyoxindole CAS 13402-55-6 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 149.15 g/mol gives 4-Hydroxyoxindole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

4-Hydroxyoxindole (CAS 13402-55-6) is a high-purity analytical reference standard with the molecular formula C8H7NO2 and a molecular weight of 149.15 g/mol.

Based on its molecular formula C8H7NO2, 4-Hydroxyoxindole contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 149.15 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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 FormulaC8H7NO2
Molecular Weight149.15 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1960
Nitrogen Atoms1

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