(6,7-Dihydroxy-2-oxo-2H-chromen-4-yl)methyl 4-oxo-3-phenyl-3,4-dihydrophthalazine-1-carboxylate CAS 735289-89-1

Purity 97%+In StockPharmaceutical Standards
CAS No.735289-89-1
Molecular FormulaC25H16N2O7
Molecular Weight456.40 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(6,7-Dihydroxy-2-oxo-2H-chromen-4-yl)methyl 4-oxo-3-phenyl-3,4-dihydrophthalazine-1-carboxylate CAS 735289-89-1 chemical structure

Description

CATO supplies (6,7-Dihydroxy-2-oxo-2H-chromen-4-yl)methyl 4-oxo-3-phenyl-3,4-dihydrophthalazine-1-carboxylate (CAS 735289-89-1), a certified reference material (molecular formula C25H16N2O7, MW 456.40 g/mol) for analytical method development and quality control.

Structurally, (6,7-Dihydroxy-2-oxo-2H-chromen-4-yl)methyl 4-oxo-3-phenyl-3,4-dihydrophthalazine-1-carboxylate (C25H16N2O7) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 19.0, corresponding to approximately 19 ring(s) or double-bond equivalent(s). With a molecular weight of 456.40 g/mol, it falls into the moderately-high-molecular-weight range. 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-Dihydroxy-2-oxo-2H-chromen-4-yl)methyl 4-oxo-3-phenyl-3,4-dihydrophthalazine-1-carboxylate 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 FormulaC25H16N2O7
Molecular Weight456.40 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore in a cool place (≤25°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)19.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1986
Nitrogen Atoms2

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