5-Bromoindole-2-carboxylic acid,Reactant involved in studies of biologically active molecules including:Discovery of indole inhibitors of MMP-13 for treatment of arthritic diseases1;Synthesis of indolyl ethanones as indoleamine 2,3-dioxygenase inhibitors2 ;cis-Diaminocyclohexane derivatives prepared for use as factor Xa inhibitors3 ;Synthesis of tubulin polymerization inhibitors and cancer cell growth inhibitors4 ;Preparation of dual PPARγ/δ agonists5;Synthesis of chemical probes to examine the role of hFPRL1 receptor .