2 3 dimethylpent 2 ene name July 8, 2019 16 32 64 128 1 3 dimethyl pent 2 ene name 2 3-dimethylpent-2-ene formula 2 3-dimethylpent-2-ene 2 3-dimethylpent-1-ene 2 3-dimethylpent-2-ene structural formula