Flash Chromatography and Semi-Preparative HPLC: Review on the Applications and Recent Advancements over the Last Decade

Flash chromatography and Semi-Preparative High Performance Liquid Chromatography have showed them-selves as promising separation tools. These techniques assist in the process of isolation, fractionation and pu-rification of chemical, biological and pharmaceutical substances. The present article describes the recent ad-vancements made in flash chromatography and semi-preparative HPLC techniques in the last decade with specific focus on natural products. This article highlights the basics, instrumentation, current advancements made to facilitate the separation, advantages and applications of these two techniques. Flash chromatography is a versatile tool for the rapid but efficient separation and purification of analytes in relatively pure form. Nowadays, there are even functionalized silica pre-packed cartridges with different silica weights and particle sizes that are available to use. Flash separation using dual columns can be used to enhance separation of com-plex mixtures and can be applied to numerous classes of compounds. The semi-preparative techniques, de-spite their high cost, can be helpful in high purity separation and production of reference standards for the pharmaceutical industry. This comprehensive review presents a brief analysis of all the recent research em-ploying these two techniques for varied applications. This review will help chromatography specialists to make the decision of applying these two techniques in order to accelerate their research and development journey.