propane-1,2-diyl dibutyrate Butanoic acid, 1-methyl-1,2-ethanediyl ester 1,2-Propanediol dibutyrate 1,2-Propylene glycol dibutyrate Dibutyric acid 1,2-propanediyl ester PROPYLENEGLYCOL DIBUTYRATE propane-1,2-diol dibutyrate Butanoic acid, 1,1'-(1-methyl-1,2-ethanediyl) ester