HCD (3ALPHA,8ALPHA)-CHOLEST-5-ENE-3,20-DIOL 20S-HYDROXYCHOLESTEROL C27 H46 O2 is hydroxyl at 20 C Back to the tutorial.

Transfere Grafic File HCD20.tgf Integrated Scientific Information System deposit DATA:

The 27 carbon steroid and the four rings of the steroid are labeled A,B,C and D.
The methyl groups labeled 18 and 19 are called angular methyl groups -CH3 and
double bond >C=C< between carbon atoms 5 and 6 and alcohol at carbon 3 and 20.
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