invertebrates

Lamellarin D (Lamellarine D), a hexacyclic pyrrolizidine alkaloid isolated from marine invertebrates, is a mitochondria-targeted topoisomerase I inhibitor and a pro-apoptotic agent.

Octopamine hydrochloride ((±)-p-Octopamine hydrochlorid) is a biogenic monoamine structurally associated with noradrenaline. It can serve as a neurohormone, a neurotransmitter, and a neuromodulator in invertebrates.

D-Galactose (Alpha-D-galactose) is an aldohexose that exists naturally in the D-form in lactose, cerebrosides, gangliosides, and mucoproteins and is converted enzymatically into D-glucose for metabolism or polysaccharides for storage. It accelerates senescence in invertebrates and mammals and has been used as a model for aging.

Chitin is a large, structural polysaccharide found in the cell walls of fungi, the exoskeletons of insects, and certain hard structures in fish and invertebrates.

(-)-Aspartic acid (L-Homoproline) is an endogenous amino acid existing in invertebrates and vertebrates. It can regulate testosterone synthesis and is an agonist of NMDA receptor.