isocholesterolEtymologyFrom iso- + cholesterol.nounAn alcohol, C₂₇H₄₆O₁₅, that is isomeric with cholesterol and found in combination with cholesterol in wool fat.“A solution of cholesterol in arsenic trichloride is colored pink, the color rapidly changing to cherry-red, accoding^([sic]) to Kahlenberg (Journ. biol. Chem. through Rép. pharm. XXXV. 282), while isocholesterols produce a blue color, which gradually changes to purple, dark red and finally to green.”