Structural and Reactivity Analyses of Nitrofurantoin–4-dimethylaminopyridine Salt Using Spectroscopic and Density Functional Theory Calculations oleh Eram Khan, Anuradha Shukla, Karnica Srivastava, Debraj Gangopadhyay, Khaled H. Assi, Poonam Tandon, Venu R. Vangala