The compound’s IUPAC name is 3-Methylpent-2-ene-1,2-diol.

In the structure shown, the longest carbon atom chain is 5. Except for one double bond between C2 and C3 atoms, all carbon atom bonds are single bonds. Pent-2-ene is the IUPAC designation for the longest carbon chain. At positions 1 and 2, two –OH groups are linked to the carbon atoms, while one methyl group is attached at position 3. As a result, the compound’s IUPAC name is 3-Methylpent-2-ene-1,2-diol.