
1) Biological pigment
Found on
https://www.crosswordclues.com/clue/boletocrocin

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 Boletus laetissimus and B. rufoaureus. The boletocrocins...
Found on
http://en.wikipedia.org/wiki/Boletocrocin
No exact match found.