JUN 04, 2017 09:30 PM PDT
steroids analysis
POSTED BY: henrry mo
1 1 19

A steroid is an organic compound with four rings arranged in a specific configuration, such as dietary lipid cholesterol, estradiol, testosterone and dexamethasone. Steroids function as important components of cell membranes and many of them are signaling molecules. The core structure of the steroid is composed of seventeen carbon atoms, bonded in four "fused" rings: three six-member cyclohexane rings and one five-member cyclopentane ring. Hundreds of steroids are found in plants, animals and fungi. All steroids are manufactured in cells from the sterols lanosterol (animals and fungi) or cycloartenol (plants). Lanosterol and cycloartenol are derived from the cyclization of the triterpene squalene. steroids analysis

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