API analysis plays an important role in nourishing the quality, safety, efficacy, and potency of bulk drugs and pharmaceutical formulations.
Increased drug products in the market lead to increased demand for new analytical techniques for Active Pharmaceutical Ingredient (API) analysis.
During the past decades, method developments were necessitated for drug impurities, excipient profiling, and testing for biopharmaceuticals like
dissolution and bioavailability. Moreover, advancements in the pharmaceutical industries necessitate upgrading newer technologies like analytical
Quality by Design (QbD) and artificial intelligence. This review focused on analytical method development and its official guidelines provided by
various regulatory bodies including ICH, US-FDA, AOAC, and USP. Moreover, this present art also states various validation and system
parameters along with their applicability and recommended range. The critical appraisal of analytical technologies for performing various API
analyses was also written in a scientific manner. Moreover, applications in recent trends in pharmaceutical industries as well as research were also
documented. Hence, this review provides sufficient information for the readers for in-depth information starting from scratch to higher
technologies for developing analytical methods and recent trends in the pharmaceutical industry.