Acetanilide: Acetanilide,, synthetic organic compound introduced in therapy in 1886 as a fever-reducing drug. Its effectiveness in relieving pain was discovered soon thereafter, and it
MidÂ·west. A region of the north-central United States around the Great Lakes and the upper Mississippi Valley. It is generally considered to include Ohio, Indiana, Illinois, Michigan, Wisconsin, Minnesota, Iowa, Missouri, Kansas, and Nebraska. The area is known for its rich farmlands and highly industrialized centers.
The Midwest includes the states that were part of the Northwest Ordinance in the 19th century. Midwestern states that are part of both the East North Central Division and the Great Lakes region include Illinois, Indiana, Michigan, Ohio and Wisconsin. The West North Central Division includes Iowa, Kansas, Minnesota, Missouri, North Dakota, Nebraska and South Dakota.