Synonyms:5-Fluoro-2,4-dichloropyrimidine;2,4-Dichloro-5-fluorouracil.Formula:C4HCl2FN2.Molecular Weight:166.97.Density:1.605 g/cm3.Melting Point:37-41 °C(lit.).Boiling Point:222.8 °C at 760 mmHg.Flash Point:88.6 °C.Appearance:yellow to orange crystalline solid.