Question

Question #f9714

Answer 1

Here's what I get.

Explanation:

Here's the structure of cholesterol showing the eight chiral centres.

(Adapted from en.wikipedia.org)

Carbon 5 is not chiral because it is attached to only three other atoms: carbons 4, 6, and 10.

Carbon 25 is not chiral because it is attached to two identical groups: the methyl groups at carbons 26 and 27.