Saframycin S is an antibiotic with a racemomycin group that exhibits inhibitory activity against Ehrlich ascites tumors. The LD50 of Saframycin S in ddY mice is 3.2 mg/kg (i.p.)[1].
References
[1] Mikami Y, et al. Saframycin S, a new saframycin group antibiotic. J Pharmacobiodyn. 1981 Apr;4(4):282-6. DOI:10.1248/bpb1978.4.282
