Multistep synthesis refers to a sequence of reactions designed to produce a specific molecule as the final outcome. The sequence of reactions shown on p. 392 of your textbook is an example. The starting material is acetanilide. The sequence consists of three steps or reactions. Each reaction produces a product that is used in the next one, until the target molecule is obtained as the final product. The target molecule in this experiment is a sulfa drug called sulfanilamide.