Khiste, D. R. H. Simultaneous Equation and Area Under the Curve Spectrophotometric Methods for Estimation of Ranolazine Hydrochloride Presence of Its Base-Induced Degradation Product: A Comparative Study: Simultaneous Equation and Area Under the Curve Spectrophotometric Methods for Estimation of Ranolazine Hydrochloride Presence of Its Base-Induced Degradation Product: A Comparative Study. ijpba 2019, 10.