ChA is of interest not only because it serves as a ligand in metal–organic compounds in plants [5,6,7], but also because of its various types of biological activity: it acts as an analgesic [8,9], an anti-inflammatory [9,10,11], an immunomodulator [12], an inhibitor of glutamate decarboxylase [13], an anti-cancer agent [14], and an inhibitor of histamine release from rat peritoneal mast cells [12] and reduces tumor necrosis factor-α (TNF-α) production [10]. Here, TNF is linked to cancer.