Esters, in organic chemistry, compounds formed, along with water, by the reaction of acids and alcohols. Because this process is analogous to the neutralization of an acid by a base in salt formation, esters were formerly called ethereal salts. This term is misleading because esters, unlike salts, are not ionized in solution (see Acids and Bases; Chemistry, Organic). Esters can be formed from both organic and inorganic acids. For example, the simple ester ethyl nitrate …showed first 75 words of 525 total…

…showed last 75 words of 525 total…Amyl nitrite is used in the treatment of asthma and epileptic convulsions as an antispasmodic. Nitroglycerin and amyl nitrite both cause blood-vessel dilation thereby lowering blood pressure. Ethyl chaulmoograte has been used in the treatment of leprosy. Dimethyl sulfate (often used in organic synthesis as a methylating agent) and diethyl sulfate are extremely dangerous in vapor form and must be handled cautiously. See also Fats and Oils. ------------------------------------------------------------------------ **Bibliography** Encarta Enclcolpedia '99. Microsoft Inc. "Esters"