Synonyms: 2,3-o-isopropylidene-d-ribonic acid gamma lactone;2,3-o-isopropylidene-d-ribonic gamma-lactone;2,3-o-isopropylidene-d-ribono-1,4-lactone;2,3-isopropylidene-d-ribonolactone;isopropylidene-d-ribonolactone;2,3-o-isopropylidene-d-ribonic γ-lactone;2,3-isopropylidene-d-ribono-1,4-lactone;D-Ribonic acid, 2,3-O-(1-methylethylidene)-, .gamma.-lactone;D-(2,3-Isopropylidene)lyxono-1,4-lactone;(3aR,6R,6aR)-6-(hydroxymethyl)-2,2-dimethyldihydrofuro[3,4-d][1,3]dioxol-4(3aH)-one;2,3-O-Isopropylidene-D-ribonic gamma-lactone,99%;