# Number of optically active compounds among the products of ozonolysis

The number of optically active compound(s) obtained upon complete ozonolysis of the following optically active compound is

In the question, I broke all the double bonds and added a $$\ce{-CHO}$$ group according to the question (ozonolysis). Checking for the optically active compounds I found two of them:

But the solution has given only one compound! Can you please help me with this?

Ozonolysis of the given compound gives $$\ce{I}$$ , $$\ce{II}$$ , $$\ce{III}$$ and $$\ce{IV}$$.
• $$\ce{I}$$ and $$\ce{II}$$ are Homomers and have same configuration "S" and therefore identical (as shown in the figure).
• $$\ce{III}$$ and $$\ce{IV}$$ are achiral . Therefore , the total number of optically active compounds formed after ozonolysis is $$\ce{= 1}$$.