Spergualintrihydrochloride is a natural product that first identified as an antibiotic from culture filtrates of Bacillus laterosporus BMG162-aF2[1]. Spergualintrihydrochloride derivatives likely acts as Hsp70 modulators[1]. [1]. Srikanth Patury, et al. Pharmacological Targeting of the Hsp70 Chaperone. Curr Top Med Chem. 2009;9(15):1337-51.