Stephacidin B, the dimer of avrainillamide, is green pigment isolated from Aspergillus ochraceus and other Aspergillus sp. Stephacidin B is more potent and selective than its monomeric analog, stephacidin A. Stephacidin B is rapidly converted to avrainillamide in cell culture. This natural alkaloid is used in cancer research.
Stephacidin B is soluble in methanol or DMSO.
