Molecular Formula C22H19N3O4 Molecular Weight 389.4 g/mol Appearance White to off-white crystalline powder Melting Point 298–303°C Solubility Insoluble in water and ethanol; soluble in dimethyl sulfoxide (DMSO) and slightly soluble in dichloromethane Density 1.51 g/cm³ Boiling Point 679.1°C (at 760 mmHg) Refractive Index 1.705