3,4,5-TrimethoxyphenyL, an intermediate metabolite of mescaline, is oxidized from the oxidation of 3,4,5-Trimethoxyphenylacetaldehyde by mouse hepatic microsomes.

Biocytin is a classical neuroanatomical tracer commonly used to map brain connectivity. Biocytin is a conjugate of D-biotin and L-lysine, where the carboxylate of D-biotin is coupled with the ?-amine of L-lysine via a secondary amide bond.

(Ethoxymethyl)benzene is a human endogenous metabolite.