2 2 4 trimethylpentan strukturformel July 8, 2019 16 32 64 128 2 3 4 trimethylpentan 2 ol strukturformel 2 2 4-trimetylopentan 2 2 4-trimethylpentan 2 2 4-trimethyl-3-pentanone 2 methyl 2 butanol