5-Hydroxymethyl-2-furfural Other names: 5-Hydroxymethylfuran-2-carboxaldehyde 5-Hydroxymethyl-2-furaldehyde Formula: C6H6O3 CAS: 67-47-0 Weight: 126,11 g/mol Boiling point: 154 °C Melting point: 32 °C Density: 1,2062 g/cm3