N3-C4-NHS ester is a non cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs).

Inhibitor of protein kinase C (PKC) ζ; attached to cell permeabilisation Antennapedia domain vector peptide. Consists of amino acids 113 - 129 of PKC ζ pseudosubstrate domain linked by a disulphide bridge to the Antennapedia domain vector peptide. The Antennapedia peptide is actively taken up by intact cells, at 4 or 37°C, ensuring rapid and effective uptake of the inhibitor peptide. Once inside the cell, the disulphide bonds are subjected to reduction in the cytoplasm leading to release of the inhibitor peptide. Induces mast cell degranulation by a PKC ζ-independent pathway.

β-Carboline-1-propionic acid is a alkaloid which can be extracted from Ailanthus altissima. β-Carboline-1-propionic acid can be used as an antileishmanial agent.