(5E)-3-(4-Methylphenyl)-5-{[(4-methylphenyl)amino]methylidene}-4-oxo-1,3-thiazolidin-1-ium-1-olate CAS 338753-40-5

Purity 97%+In StockPharmaceutical Standards
CAS No.338753-40-5
Molecular FormulaC18H18N2O2S
Molecular Weight326.41 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(5E)-3-(4-Methylphenyl)-5-{[(4-methylphenyl)amino]methylidene}-4-oxo-1,3-thiazolidin-1-ium-1-olate CAS 338753-40-5 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 326.41 g/mol gives (5E)-3-(4-Methylphenyl)-5-{[(4-methylphenyl)amino]methylidene}-4-oxo-1,3-thiazolidin-1-ium-1-olate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

(5E)-3-(4-Methylphenyl)-5-{[(4-methylphenyl)amino]methylidene}-4-oxo-1,3-thiazolidin-1-ium-1-olate (CAS 338753-40-5), molecular formula C18H18N2O2S and molecular weight 326.41 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C18H18N2O2S, (5E)-3-(4-Methylphenyl)-5-{[(4-methylphenyl)amino]methylidene}-4-oxo-1,3-thiazolidin-1-ium-1-olate contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 326.41 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), (5E)-3-(4-Methylphenyl)-5-{[(4-methylphenyl)amino]methylidene}-4-oxo-1,3-thiazolidin-1-ium-1-olate 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 FormulaC18H18N2O2S
Molecular Weight326.41 g/mol
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)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Nitrogen Atoms2
Sulfur Atoms1

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