(5E)-5-({3-chloro-4-[(4-fluorophenyl)methoxy]phenyl}methylidene)-3-ethyl-2-sulfanylidene-1,3-thiazolidin-4-one CAS 255865-23-7

Description

Compared with other compounds in its class, the molecular weight of 407.91 g/mol gives (5E)-5-({3-chloro-4-[(4-fluorophenyl)methoxy]phenyl}methylidene)-3-ethyl-2-sulfanylidene-1,3-thiazolidin-4-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

(5E)-5-({3-chloro-4-[(4-fluorophenyl)methoxy]phenyl}methylidene)-3-ethyl-2-sulfanylidene-1,3-thiazolidin-4-one (CAS 255865-23-7), molecular formula C19H15ClFNO2S2 and molecular weight 407.91 g/mol, is a CATO reference standard with documented purity and traceability.

(5E)-5-({3-chloro-4-[(4-fluorophenyl)methoxy]phenyl}methylidene)-3-ethyl-2-sulfanylidene-1,3-thiazolidin-4-one (C19H15ClFNO2S2) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, 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.

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.

Physical & Chemical Properties

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