2 3 dimethyl pent 4 ene 2 ol July 8, 2019 16 32 64 128 2 3-dimethyl pent-2-ene 2 4-dimethyl-3-pentanol 2 4-dimethyl-3-pentanol formula 2 4 dimethyl pent-1-en 2 4-dimethyl-3-pentanone