4 ethyl 2 5 6 trimethyloctane July 8, 2019 16 32 64 128 5 ethyl 2 4 6 trimethyloctane structural formula 5-ethyl-2 4 6-trimethyloctane structure 3-4-dibromo-5-ethyl-2 6 6 trimethyloctane 4-ethyl-2 2 5-trimethylheptane 4-етил-2 5 6-триметилоктан
