Butanediol 1,2-Butanediol 1,3-Butanediol 1,4-Butanediol 2,3-Butanediol 2-Methyl-2-propyl-1,3-propanediol Alkanediol Butanetriol Butyl alcohol C4H10O2 Chirality (chemistry) Crisnatol Diol Erythritol Isobutyraldehyde Threitol