1,3-Diethyl 2-{2-[2-chloro-4-(4-chlorophenoxy)phenyl]-2-oxoethyl}-2-hydroxypropanedioate CAS 400087-53-8

Description

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.

1,3-Diethyl 2-{2-[2-chloro-4-(4-chlorophenoxy)phenyl]-2-oxoethyl}-2-hydroxypropanedioate (CAS 400087-53-8), molecular formula C21H20Cl2O7 and molecular weight 455.29 g/mol, is a CATO reference standard with documented purity and traceability.

1,3-Diethyl 2-{2-[2-chloro-4-(4-chlorophenoxy)phenyl]-2-oxoethyl}-2-hydroxypropanedioate (C21H20Cl2O7) contains a flavonoid core, a hydroxyl group, an ether linkage, chlorine substitution. 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

Why CATO?

• ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
• 130,000+ catalog items in stock, COA supplied with every batch
• Worldwide shipping with full export documentation (HS code guidance available)
• Technical support: +86 18665070610 / Nicole.chen@cato-chem.com