Analytical Chemistry plays a critical role in the development of a compound from its synthesis stage to its marketing stage as a part of a drug formulation and analysis. The instrumental methods for quantitation which are most commonly used in a pharmaceutical laboratory fall into four basic categories: chromatography, spectrophotometric, electrochemical, and radiometric analysis. Electro-analytical chemistry along with the use of oxidation-reduction reactions and other charge-transfer phenomena had its origins eight decades ago. It is one of the fundamental sub-disciplines of analytical...