(S)-(+)-gamma-(Hydroxymethyl)-gamma-butyrolactone(5S)-(+)-5-(Hydroxymethyl)dihydrofuran-2(3H)-one(R)-γ-羟甲基-γ-丁内酯(R)-γ-Hydroxymethyl-γ-butyrolactone(R)-(-)-Dihydro-5-(hydroxymethyl)-2(3H)-furanone(R)-5-羟甲基-2-氧代四氢呋喃(R)-5-Hydroxymethyl-2-oxotetrahydrofuran(R)-4,5-二氢-5-羟甲基-2(3H)-呋喃酮(R)-(-)-二氢-5-(羟基甲基)-2(3H)-呋喃酮(R)-4,5-Dihydro-5-hydroxymethyl-2(3H)-furanone