Kalafungin is a substance discovered in the 1960s and found to act as a broad-spectrum

antibiotic An antibiotic is a type of antimicrobial substance active against bacteria. It is the most important type of antibacterial agent for fighting pathogenic bacteria, bacterial infections, and antibiotic medications are widely used in the therapy ...

in vitro ''In vitro'' (meaning ''in glass'', or ''in the glass'') Research, studies are performed with Cell (biology), cells or biological molecules outside their normal biological context. Colloquially called "test-tube experiments", these studies in ...

''. It was isolated from a strain of the bacterium '' Streptomyces tanashiensis''. It is not known to be marketed anywhere in the world.

References

Antibiotics Benzoisochromenes Lactones Phenols Quinones Hydroxyketones {{antiinfective-drug-stub