Profiles of Drug Substances, Excipients, and Related Methodology, Volume 42 presents comprehensive reviews of drug substances and additional materials, with critical review chapters that summarize information related to the characterization of drug substances and excipients, thus meeting the needs of the pharmaceutical community and allowing for the development of a timely vehicle for publishing review materials on the topic. This latest release covers a variety of substances, including Cinacalcet Hydrochloride, Clenbuterol Hydrochloride, Gliclazide, Lomefloxacin, Olmesartan, Propranolol, and Tolterodine Tartrate. The scope of the Profiles series encompasses review articles and database compilations that fall within one of the following six broad categories, Physical profiles of drug substances and excipients, Analytical profiles of drug substances and excipients, Drug metabolism and pharmacokinetic profiles of drug substances and excipients, Methodology related to the characterization of drug substances and excipients, Methods of chemical synthesis, and Reviews of the uses and applications for individual drug substances, classes of drug substances, or excipients.