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Nitrates are one of a type of drug known as vasodilators, that are used to treat angina in people with coronary artery disease or chest pain caused by blocked blood vessels of the heart. They work to control angina by relaxing the coronary arteries so blood can flow more easily to the heart.
Nitrate is a polyatomic ion with the molecular formula NO 3 â and a molecular mass of 62.0049 g/mol.Nitrates also describe the organic functional group RONO 2.he anion is the conjugate base of nitric acid, consisting of one central nitrogen atom surrounded by three identically bonded oxygen atoms in a trigonal planar arrangement. The nitrate ion carries a formal charge of -1.