aspidin

aspidin (uncountable)

1. (organic chemistry) The toxic compound 2-butanoyl-4-[(3-butanoyl-2,6-dihydroxy-4-methoxy-5-methylphenyl)methyl]-3,5-dihydroxy-6,6-dimethylcyclohexa-2,4-dien-1-one found in aspidium
2. A spongy bonelike material that made up the skin of the jawless fish Astraspis

• galeaspidin

• adipsin