Cancidas (caspofungin acetate) is a semisynthetic echinocandin antifungal agent used as a chemical reagent and pharmaceutical active ingredient. It is primarily employed as an antifungal medication to treat serious fungal infections, effective against Candida species (e.g., candidemia, intra-abdominal abscesses) and invasive aspergillosis in patients unresponsive to other therapies. Administered intravenously in hospital settings for immunocompromised patients (e.g., undergoing chemotherapy or organ transplants), it also serves as prophylaxis against fungal infections in high-risk cases. By inhibiting β-1,3-D-glucan synthesis in fungal cell walls, it reduces infection spread and aids recovery in critically ill individuals.