## Organic Chemistry (8th Edition)

The IUPAC name of the alkene is $4-methylpent-1-ene$
The compound has 5 carbon atoms in its longest carbon chain ($pent-$). It has a $methyl-$ substituent at position 4, and a double bond at position 1. So, the IUPAC name of the alkene is $4-methylpent-1-ene$