Anhydrous sodium thiosulfate (Pedmarqsi, Norgine) is indicated for 'the prevention of ototoxicity induced by cisplatin chemotherapy in patients 1 month to <18 years of age with localised, ...

nitric acid and sodium hydroxide, and anhydrous copper sulfate and water. Endothermic reactions include solid citric acid and sodium hydrogencarbonate, and dissolving ammonium nitrate in water.