8-Hydroxy-2H-benzo[b][1,4]oxazin-3(4H)-one CAS 258532-76-2

Purity 97%+In StockPharmaceutical Standards
CAS No.258532-76-2
Molecular FormulaC8H7NO3
Molecular Weight165.15 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

8-Hydroxy-2H-benzo[b][1,4]oxazin-3(4H)-one CAS 258532-76-2 chemical structure

Description

The occurrence of 8-Hydroxy-2H-benzo[b][1,4]oxazin-3(4H)-one is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

8-Hydroxy-2H-benzo[b][1,4]oxazin-3(4H)-one (CAS 258532-76-2) is a high-purity analytical reference standard with the molecular formula C8H7NO3 and a molecular weight of 165.15 g/mol.

Based on its molecular formula C8H7NO3, 8-Hydroxy-2H-benzo[b][1,4]oxazin-3(4H)-one 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 165.15 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.

CATO manufactures 8-Hydroxy-2H-benzo[b][1,4]oxazin-3(4H)-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC8H7NO3
Molecular Weight165.15 g/mol
AppearanceOff-white to pale yellow crystalline powder. (faint amine-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Nitrogen Atoms1

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