sentences:  A number of closely related compounds such as o-methyl sterigmatocystin are known, and some may also occur naturally.Sterigmatocystin forms pale yellow needles and that are readily soluble in methanol, ethanol, acetonitrile, benzene, and chloroform.Sterigmatocystin reacts with a hot solution of potassium hydroxide and ethanol and is easily methylated by methyl iodide.