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.

L-Histidinol dihydrochloride is a precursor of histamine and a reversible inhibitor of protein synthesis.

N6-Isopentenyladenosine, an end product of the mevalonate pathway, is an autophagy inhibitor with anti-melanoma activity. N6-Isopentenyladenosine, an RNA modification found in cytokinins, regulates plant growth/differentiation and improves the efficiency