Stearoylcarnitine (Stearoyl-L-carnitine) is a fatty ester lipid molecule, a human endogenous metabolite that serves as a biomarker for early-onset preeclampsia and late-onset preeclampsia.

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.

7-Dehydrocholesterol down-regulates cholesterol biosynthesis in cultured Smith-Lemi-Opitz syndrome skin fibroblasts.