Loudon's Organic Chemistry is known for its clear writing, high standard of accuracy, and creative problems. The fifth edition contains 1,668 problems-many of them new and taken directly from the scientific literature. This edition, more than ever before, encourages students to analyze and synthesize concepts. The text is used at a wide variety of schools, such as the University of Wisconsin; University of Maryland (College Park), Boston College; University of Illinois; University of Colorado, Boulder; Duke University; University of California, Berkeley; California Institute of Technology; University of Vermont; Reed College; Yale University; University of California, Irvine; Purdue University; Queens University; Bryn Mawr; Hamilton College; Franklin and Marshall College; Kent State University; Indiana State University; Washington State University; Merrimack College; the Colorado School of Mines, and many more. Roberts and Company has partnered with Sapling Learning to offer an online homework system that is specifically tailored to the match the topic flow of the textbook.