Impurities are the key factors in the quality of API. So in API synthesis the important encounter is limiting the impurities are related substances is key challenge and availability of impurities during the course of development always a limiting factor to development team. In view to support to process chemist Dasha extends the offer in supporting to provide the impurity synthesis of API’s. It also includes impurity synthesis either by enriching the content in API synthesis followed by separation by analytical echniques, purification, characterization, and potency of impurity.