What is the name of this chemical formula

IUPAC name

3-ethyl-4-methylpent-2-ene

Explanation:

Other names of this compound are

     2-Pentene,3-ethyl-4-methyl

     2-isopropyl-1-methyl-1-butene

IUPAC naming rules

1. start numbering the chain from the functional group. In this compound we start from the carbon on left side of the double bond.  

2. Here we can see that at position 3 there is an ethyl group. So we write it as 3-ethyl. Which means that there is an ethyl group at position 3.

3. At position 4 we can see that there is a methyl group attached to the main chain, so we write it as 4-methyl.

4. Now we count the total number of carbons in the main chain. As we can see that there are 5 carbons in the remaining or parent chain, so we write it as "pent" from pentane.

5. At position 2 we can see that there is a double bond in the main chain, so we write it as 2-ene.

6. So the IUPAC name of the compound will be 3-ethyl-4-methylpent-2-ene .

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