A cyclic ketone with an odour of violets or cedar wood, the a and b varieties of which differ in the location of the double bond in the ring: provitamins A and vitamin A have ionone configuration in the ring portion; alpha-carotene contains one alpha-and one beta-ionone moieties, beta-carotene contains two beta-ionone moieties, and gamma-carotene contains one beta-ionone moiety.

(05 Mar 2000)

ionization chamber, ionizing radiation, ionogram, ionomycin < Prev | Next > ionopherogram, ionophore, ionophores

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