crocoxanthin

Noun

 * 1)  An acetylenic carotenoid (3R,6'R)-7,8-didehydro-β,ε-caroten-3-ol
 * 2) * 2012, Vladimir S. Saakov, ‎Valery Z. Drapkin, ‎Alexander I. Krivchenko, Derivative Spectrophotometry and Electron Spin Resonance (ESR) Spectroscopy for Ecological and Biological Questions (page 266)
 * Monadoxanthin, losing one hydroxyl group, turns into crocoxanthin (one hydroxyl and acetylene bond). The product of reduction of crocoxanthin was not found, and it is a problem for further research