2 methylbutan 1 3 diol July 8, 2019 16 32 64 128 2 methylbutane 1 3 diol 2 methylbutane 1 3 diol structure 2 methyl 2 butanol 2 3dimethylbutane 2 methylbutan-2-ol 2 2-dimethylbutan-1-ol 2 3-dimethylbutane-2 3-diol boiling point