Boletocrocin is any one of a group of seven closely related organic compounds, individually named boletocrocin A through boletrocrocin G. These compounds are polyene dicarboxylic acids that include both lipophilic and polar amino acids. They were extracted from the brightly colored mushrooms and . The boletocrocins' conjugated systems account for the intense color. Related biological pigments are present in other fungi, such as calostomal (from Calostoma cinnabarinum), (from ), and (from Mycena aurantiomarginata).