This folder contains organic structural spectroscopy problems used by Dr. Isaacs in his Chemistry 460 course at the University of Maryland. Each problem contains 1H, 13C, DEPT, COSY, HSQC, and HMBC NMR spectra that were simulated using the commercially available software from Advanced Chemistry Development. These problems can be used in two different ways: 1) the students are provided the structure and asked to assign all the resonances, and 2) the students are given the spectra and asked to deduce the structures. The answer key is password protected. Instructors can email Dr. Isaacs at LIsaacs@umd.edu to request the password.