NεNεNε-Trimethyl-L-lysine is a methylated derivative of the amino acid lysine. It is a component of histone proteins a precursor of carnitine and a coenzyme of fatty acid oxidation. NεNεNε--Trimethyl-L-lysine residues are found in a number of proteins and are generated by the action of S-adenosyl-L-methionine on exposed lysine residues.

Humantenine is a indole alkaloid compound isolated from Gelsemium elegans.

Nortrachelogenin-8'-O-beta-glucoside is a lignan with a diarylhydroxybutyrolactone skeleton which isolated from the leaves and stems of Trachelospermum jasminoides (Lindl.) Lem.