00:01
All right, so right here we have gotten aldotetros and akita pentos, and we're asked to determine the number of stereocenters in both these molecules.
00:11
So looking at first the aldotetros, you can see that this first carbon right here obviously is not a stereo center because it's got a double bond.
00:21
So we can ignore that.
00:23
Going down the chain, our first carbon right here, we can see is bonded to an oh group, an h group, this c group right here and then a different carbon chain below.
00:38
So that one must be a stereo center.
00:42
The second carbon, you can apply a similar argument, so those also might be a stereo center.
00:47
Lastly, the ch2oh at the very bottom is not a stereo center because it's got two similar groups...