4-Hydroxy-6-methyl-2-oxo-2H-pyran-3-carbaldehyde N-(4-chlorophenyl)hydrazone CAS 477868-38-5

Description

As a certified reference material (CRM), 4-Hydroxy-6-methyl-2-oxo-2H-pyran-3-carbaldehyde N-(4-chlorophenyl)hydrazone 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.

4-Hydroxy-6-methyl-2-oxo-2H-pyran-3-carbaldehyde N-(4-chlorophenyl)hydrazone (CAS 477868-38-5), molecular formula C13H11ClN2O3 and molecular weight 278.69 g/mol, is a CATO reference standard with documented purity and traceability.

4-Hydroxy-6-methyl-2-oxo-2H-pyran-3-carbaldehyde N-(4-chlorophenyl)hydrazone (C13H11ClN2O3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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.

Physical & Chemical Properties

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