IDENTITY OF ε-CAROTENE AND ε1-CAROTENE12

Abstract
ε-Carotene was isolated from previously known sources and its spectral and adsorption properties compared with those of a similar carotene recently observed in Cryptomonas ovata. Identity was established. Similar comparisons with synthetic ε1-carotene point to the identity of the natural and synthetic compounds and permit assignment of KARRER and EUGSTER's formulation for ε1-carotene to the naturally occurring representative.

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