Sphingosine-1-phosphate (S1P) is an agonist for S1P1-5 receptors and a ligand for GPR3, GPR6, and GPR12. As an intracellular second messenger, it mobilizes Ca2+ and acts as an extracellular ligand for G-protein coupled receptors.

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.

(-)-Carveol, mixture of isomers is a monocyclic monoterpenic alcohol, present in essential oils of plant species such as Cymbopogon giganteus, Illicium pachyphyllum and in spices such as Carum carvi (cumin).