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.beta.,.tau.-caroten-3-ol
β, τ-caroten-3-ol

8'-apo-.beta.-caroten-8'-al
8'-apo-β-caroten-8'-al

ethyl 8'-apo-.beta.-caroten-8'-oate
8'-apo-β-caroten-8'-oato de etilo

we have to add that the molecule a is the main component of the red pigment of poppies such in the form of beta-caroten.
hay que añadir que la molécula a está muy presente en el pigmento rojo de las flores de amapola, bajo forma de beta-carotena.

β-apo-8′-carotenoic acid ethyl ester, ethyl 8′-apo-β-caroten-8′-oate
Éster etílico del ácido β-apo-8′-carotenoico, 8′-apo-β-caroteno-8′-oato de etilo

,9z)-(6s)-6-hydroxy-3-oxo-11-apo-ε-caroten-11-oic acid
Ácido (7e,9z)-(6s)-6-hidroxi-3-oxo-11-apo-ε-caroten-11-oico

(3r,3's,5'r)-3,3'-dihydroxy-.beta.,.kappa.-caroten-6'-one
(3r,3's,5'r)-3,3'-dihidroxi-β,κ-caroten-6'-ona