2-Formyl-3-hydroxybenzyl Formate (Rhizoglyphinyl Formate), a Novel Salicylaldehyde Analog from the House Dust Mite Dermatophagoides pteronyssinus [Astigmata, Pyroglyphidae]

A novel salicylaldehyde analog was isolated in a 3.7% yield from the hexane extract of the acarid mite. Dermatophagoides pteronyssinus, possibly as its opisthonotal gland secretion. The chemical structure was physico-chemically elucidated to be 2-formyl-3-hydroxybenzyl formate, to which we give the trivial name rhizoglyphinyl formate, and the identity of the compound was confirmed by its synthesis.