Orsellinaldehyde
Orsellinaldehyde is a dihydroxybenzaldehyde with a methyl side group. It can be classified as a resorcinol, benzaldehyde or toluene derivative. It is a natural product of several fungi. Fungi that contain it include Grifola frondosa, Aspergillus cleistominutus, Aspergillus nidulans, and Agrocybe praecox.