What is the name of the compound shown here? СН3
CH,
1
CH3 -CH=CH-
CH-CH-CH=CH,
SH

3, 5–dimethyl–4–heptanethiol.

Explanation:

To name the compound given in question above, we must:

1. Determine the longest continuous carbon chain. This gives the parent name of the compound.

2. Determine the functional group of the compound and give it the lowest possible count.

3. Identify the substituent group attached.

4. Give the substituent the lowest possible count.

5. Combine the above to obtain the name of the compound.

Now, let us name the compound given in question with the above ideas in mind. This can be achieved as shown below:

1. The longest continuous carbon chain is 7 i.e heptane.

2. The functional group is –SH i.e thiol. We shall add thiol to end end of heptane making the parent to be heptanethiol. The functional group is at carbon 4.

3. The substituent attached is CH3 i.e methly.

4. There are two CH3 attached to compound and they are at carbon 3 and 5 respectively.

5. The name of the compound is:

3, 5–dimethyl–4–heptanethiol.

the answer is d. 74.02