"Tetrachlorodecaoxide" (TCDO) is a chlorite-containing substance with claimed immunomodulatory, macrophage-activating properties.

[1] WF10 (Macrokine, Immunokine, Oxoferin) is an aqueous solution of tetrachlorodecaoxide designed for intravenous injection.

[4][2] This incomplete formula shows a mixture of chlorite ion, water, and molecular oxygen: "Cl4H2O114-" = 4ClO2− + H2O + O2.

Oxoferin was found to be equivalent with aqueous sodium chlorite.

[5] Tetrachlorodecaoxide / WF10 is used in the management of radiation cystitis,[6] is effective in the treatment of diabetic foot ulcers,[7] and is used in wound healing, where the mechanism of action is activation of the macrophage system, and increasing the partial pressure of oxygen in the wound.