Molecular Formula: C₁₅H₁₃NO₃S₂ 
Synonyms: 2-[(5Z)-5-[(E)-2-methyl-3-phenyl-prop-2-enylidene]-4-oxo-2-sulfanylidene-thiazolidin-3-yl]acetic acid; 3-Thiazolidineacetic acid,5-[(2E)-2-methyl-3-phenyl-2-propenylidene]- 4-oxo-2-thioxo-,(5Z)-; 3-Thiazolidineacetic acid, 5-(2-methyl-3-phenyl-2-propenylidene)-4-oxo-2-thioxo-, (E,E)-; Kinedak; Epalrestat (JAN); 5-((Z,E)-beta-Methylcinnamylidene)-4-oxo-2-thioxo-3-thiazolidineacetic acid; Epalrestat [INN]; Kinedak (TN); Ono 2235; Epalrestatum [Latin]; Properties: orange red crystalline powder, with special odor; Epalrestate; Epatrestat;
Appearance: Deep red acicular crystal
Molecular Weight: 319.39862
Density: 1.43 g/cm3
Boiling Point: 516.8 °C at 760 mmHg
Melting Point: 210-217 °C
Flash Point: 266.4 °C
Storage Temperature: Store in original container in a cool dark place.
Refractive index: 1.705
Solubility: Soluble in water
Usage: An aldose reductase inhibitor.