Bleomycin A6 (also known as boanmycin) was developed in China as an antineoplastic antibiotic. This drug participated in clinical trials for the treatment of Squamous Cell Lung Cancer. It was shown that besides the antitumor effect, Bleomycin A6 had the ability to alter the tumor microenvironment and could contribute toward lung cancer relapse and metastasis on long-term treatment. The development of this drug, apparently, was discontinued.

Bleomycin sulfate is an antineoplastic antibiotic isolated from Streptomyces verticillus. It is a mixture of glycopeptide antibiotics containing primarily Bleomycin A2 (~70%) and B2 (~30%). Bleomycin binds to DNA, inhibits DNA synthesis, and causes single strand scission of DNA in vivo and in vitro at specific base sequences.

Bleomycin sulfate is an antineoplastic antibiotic isolated from Streptomyces verticillus. It is a mixture of glycopeptide antibiotics containing primarily Bleomycin A2 (~70%) and B2 (~30%). Bleomycin binds to DNA, inhibits DNA synthesis, and causes single strand scission of DNA in vivo and in vitro at specific base sequences.