Top Posters
Since Sunday
I
3
3
p
2
w
2
y
2
J
2
Q
2
r
2
o
2
e
2
j
2
d
2
SlideshowReport

Isoprene

Description
Ring identification system (a)

Carbon numbering system (b) used for steroids.

Structural conventions (c), with cholestanol as the example.

a-Substituents project below the plane of the steroid ring system (blue dashed wedge), and b-substituents project above that plane (red solid wedge).

The hydrogens at positions 5, 9, and 14 have the a-configuration, whereas the hydroxyl, the two methyl groups, the hydrogen at C-8, and the aliphatic side chain at C-17 are all b-substituents.
Add Comment
Explore
Post your homework questions and get free online help from our incredible volunteers
  408 People Browsing
Your Opinion
Where do you get your textbooks?
Votes: 447