Cryptosporiopsin can be isolated from strains of Cryptosporiopsis sp. and Sporormia affinis. It exhibits antimicrobial activity against various basidiomycetes, alga fungi, ascomycetes, and glaucomycetes responsible for wood decay. Additionally, it inhibits the germination of Phytophthora potatoes spores. Cryptosporiopsin also shows some activity against both Gram-positive and Gram-negative bacteria.