It is produced by the strain of Arthrobacter oxamicetus B 302-B 75 (ATCC 21788). It's a nucleoside antibiotic. It has anti-bacterial, mycobacterium effects. It has protective effect on intramuscular injection in mice infected with Staphylococcus aureus and Escherichia coli, but oral administration is not effective. It inhibits pathogenic leptospirosis at 0.1-0.5 μg/mL, and inhibits non-pathogenic leptospirosis at 10-40 μg/mL.