- an antibiotic, C37H67NO13, produced by an actinomycete, Streptomyces erythraeus, used chiefly in the treatment of diseases caused by many Gram-positive and some Gram-negative organisms.
- an antibiotic used in treating certain infections,sometimes as an alternative to penicillin. It is obtained from the bacterium Streptomyces erythreus. Formula: C 37 M 67 NO 13
