Objective To isolate and identify a chemical compound,FIM-R24,extracted from the fermentation broth of rapamycin producing strain Streptomyces hygroscopicus FC904,which showed a RRT of 0.88 in the rapamycin HPLC analysis.Methods FIM-R24 was isolated by silica gel chromatography and preparative liquid chromatography,and its chemical structurewas determined by the spectral analysis including NMR,UV,IR,and HRMS.The anti-cancer activity of FIM-R24 was determined by the SRB method in vitro,and the antifungal act...