2-Furaldehyde, 5-(hydroxymethyl)- 2-Furancarboxaldehyde, 5-(hydroxymethyl)- 5-(Hydroxymethyl)-2-furaldehyde 5-(Hydroxymethyl)-2-furancarbonal 5-(Hydroxymethyl)-2-furfural 5-(Hydroxymethyl)-2-furfuraldehyde 5-(Hydroxymethyl)furfural 5-Hydroxymethyl-2-formylfuran 5-Hydroxymethylfuraldehyde 5-Hydroxymethylfuran-2-aldehyde 5-Oxymethylfurfurole 67-47-0 HMF Hydroxymethylfurfurole NSC40738