The book titled as " Biological evaluation of phenanthroline based thiazolidinone analogs" describe the brief literature survey of phenanthroline and thiazolidinone derivatives. It also include synthesis of new compounds which contains both phenanthroline and thiazolidinone moiety, their characterization with spectral techniques like NMR, IR, and Mass etc. All newly synthesized compounds were tested for their anti-bacterial, anti-fungal and anti-tuberculosis activity.