4 4 dimethyl pent-1-ene July 8, 2019 16 32 64 128 4 4 dimethyl pent 1 ene 4 4-dimethylpent-1-ene structure 2 4 dimethyl pent 1 ene 3 4 dimethyl pent 1 ene 4 4-dimethyl pent-2-ene 4 4-dimethyl-2-pentyne 2 4 dimethyl pent-1-en