It is produced by the strain of Streptomyces sp. C39. It is a bioactive substance. Gibberellin C of 200 ppm has no inhibitory effect on α-amylase. It also has no anti-bacterial, anti-yeast and anti-fungal effects at 100 ppm (MIC, agar dilution method using bouillon agar for bacteria and Sabouraud agar for yeast and fungi).