Quercetin-3-O-[(6-caffeoyl)-β-glucopyranosyl (1→3) α-rhamnopyranoside]-7-O-α-rhamnopyranoside can be isolated from the aerial parts of the fern Ophioglossum vulgatum L and has wound healing activity.

Sapienic acid sodium is a fatty acid commonly. It has variable antimicrobial activities against Gram-positive and Gram-negative bacteria found on the skin and in the oral cavity.

All-trans-retinal is a one of the major vitamin A metabolites in the retina. In physiological conditions all-trans-RAL is regenerated to the visual chromophore 11-cis-retinal.