Ammonium chloride- 15 N is the 15 N labeled Ammonium chloride. Ammonium chloride, as a heteropolar compound with pH value regulation, can cause intracellular alkalization and metabolic acidosis thus effecting enzymatic activity and influencing the process of biological system. Ammonium chloride is an autophagy inhibitor . Ammonium chloride is also a lysosome inhibitor.