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. 1968 Oct 18;162(3851):363.
doi: 10.1126/science.162.3851.363.

Sterols: isolation from a blue-green alga

N J De Souza, W R Nes

Sterols: isolation from a blue-green alga

N J De Souza et al. Science. .

Abstract

A crystalline mixture of sterols was isolated from the filamentous blue-green alga Phormidium luridum. The mixture consisted of unsaturated 24-ethylcholesterols possessing Delta(7)-, Delta(5,7)-, and Delta(5)-bonds together with their Delta(22)-derivatives and a small amount of cholesterol. The major component was 24-ethyl-Delta(7)-cholestenol. Squalene and phytol were also evident.

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