6,7-Dimethoxy-2-(3-nitrophenyl)-4H-benzo[d][1,3]oxazin-4-one CAS 331461-74-6

Purity 97%+In StockPharmaceutical Standards
CAS No.331461-74-6
Molecular FormulaC16H12N2O6
Molecular Weight328.28 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

6,7-Dimethoxy-2-(3-nitrophenyl)-4H-benzo[d][1,3]oxazin-4-one CAS 331461-74-6 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 6,7-Dimethoxy-2-(3-nitrophenyl)-4H-benzo[d][1,3]oxazin-4-one.

CATO supplies 6,7-Dimethoxy-2-(3-nitrophenyl)-4H-benzo[d][1,3]oxazin-4-one (CAS 331461-74-6), a certified reference material (molecular formula C16H12N2O6, MW 328.28 g/mol) for analytical method development and quality control.

Based on its molecular formula C16H12N2O6, 6,7-Dimethoxy-2-(3-nitrophenyl)-4H-benzo[d][1,3]oxazin-4-one contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 328.28 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.

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), 6,7-Dimethoxy-2-(3-nitrophenyl)-4H-benzo[d][1,3]oxazin-4-one 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 FormulaC16H12N2O6
Molecular Weight328.28 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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