31185-67-8 5-19-09-00136 (Beilstein Handbook Reference) BRN 1382260 Heptafluoroorthobutyric acid cyclic ester with 2-(hydroxymethyl)-2-methyl-1,3-propanediol Orthobutyric acid, heptafluoro-, cyclic ester with 2-(hydroxymethyl)-2-methyl-1,3-propanediol (1:1)