Echinocandin B Hydrochloride is the hydrochloride salt of a the natural product and lipopeptide antifungal Ehinocandin B. Discovered in 1974 in Germany, it is the first of its class of antifungals called echinocandins. Echinocandin B is a cyclic hexapeptide with a linoleolyl side chain. Anidulafungin is synthesized from Echinocandin B.