Provides comprehensive coverage of the interpretation of LC MS MS mass spectra of 1300 drugs and pesticides * Provides a general discussion on the fragmentation of even-electron ions (protonated and deprotonated molecules) in both positive-ion and negative-ion modes * This is the reference book for the interpretation of MS MS mass spectra of small organic molecules * Covers related therapeutic classes of compounds such as drugs for cardiovascular diseases, psychotropic compounds, drugs of abuse and designer drugs, antimicrobials, among many others * Covers general fragmentation rule as well as specific fragmentation pathways for many chemical functional groups * Gives an introduction to MS technology, mass spectral terminology, information contained in mass spectra, and to the identification strategies used for different types of unknowns