5-(hydroxymethyl)furan-2-carbaldehyde;5-(Hydroxymethyl)-2-furancarboxaldehyde; 2-Formyl-5-hydroxymethylfuran; HMF; 2-Hydroxymethyl-5-furfural; 5-(Hydroxymethyl)-2-furancarbonal; 5-(Hydroxymethyl)furfural; 5-Hydroxymethylfurfurol; 5-Oxymethylfurfurole; Hydroxymethylfurfuraldehyde; NSC 40738;5-Hydroxymethyl-2-furaldehyde; Furfural Impurity 2