Pidotimod CAS NO.: 121808-62-6 Molecular Formula: C9H12N2O4S Molecular Weight: 244.26758 Density:1.53 g/cm3 Melting Point:194-198 °C Boiling Point:663 °C at 760 mmHg Flash Point:354.8 °C Purity:≥98% Appearance: Almost white to white crystalline powder. Storage Temperature: Store in original container in a cool dark place.