5-Fluorouracil [51-21-8] is a chemically defined substance with the molecular formula C4H3FN2O2 and a molecular weight of 130.08. It decomposes at 282-283 °C and sublimes (0.1 mm) between 190-200 °C. Its Melting Point is reported as decomposing at 282.2 to 282.8 °C. This compound carries the hazard signal word Danger due to its acute toxicity when ingested.

• CAS Number: 51-21-8
• Boiling Point: Decomposes at 282-283 °C; sublimes (0.1 mm): 190-200 °C
• Molecular Weight: 130.08
• Molecular Formula: C4H3FN2O2
• Melting Point: Decomposes at 282.2 to 282.8 °C
• Exact Mass: 130.01785550
• GHS Signal Word: Danger
• Hazard Statements:
• H301: Toxic if swallowed [Danger Acute toxicity, oral]