1 3 dimethyl pent 2 ene meaning July 8, 2019 16 32 64 128 2 3-dimethyl-1-pentene 2 3-dimethylpent-1-ene 2 3-dimethyl pent-2-ene 3 3 dimethyl pent 1 ina 2 3-dimethyl-1-pentanol