Standards; Pharmaceutical/API Drug Impurities/Metabolites;
2,5-Difluorobenzoic Acid acts as a reagent in the synthesis of rutaecarpine and analogs used for the removal of caffeine from the body. Prepparation of quinolone carboxylic acids as cell-permeable inhibitors of protein tyrosine phosphatase (Erratum). Preparation, molecular docking, and bioactivity of a-ketoamides as cathepsin S inhibitors with potential applications against tumor invasion and angiogenesis. Also used as new passive water tracers for oil field applications.