2 3 dimethyl 1 3 butanediol July 8, 2019 16 32 64 128 2 3 – dimethyl – 1 4 – butanediol 2 3-dimethyl-2 3-butanediol 2 3-dimethyl butane 2 3-dimethylbutan-2 3-diol 2 3-dimethylbutane-2 3-diol 2 2-dimethyl-1 3-propanediol