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 is served by several interstate highways. Most of the states in the Midwest can be accessed by the major east-west corridors of: 1  I-94 - connects Michigan, Indiana, Illinois, Wisconsin and Minnesota.  I-90 - connects Ohio, Indiana, Illinois, Wisconsin and Minnesota.