SN 6 是一种选择性 Na+/Ca2+ 交换器 (NCX) 抑制剂（NCX1 的 IC50：2.9 μM，NCX2：16 μM，NCX3：8.6 μM）。

(2-(2,6-二氧哌啶-3-基)-1,3-二氧异吲哚啉-5-基)甘氨酸是一种化合物。

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.