| 英文名称: | | 6-dioxabicyclo(3.1.0)hexane-1-carboxylic acid, 5-ethyl-4-methyl-2-oxo- methy | | 4-ethyl-3-(methoxycarbonyl)-5-methyl-3,4-gamma-butyrolactone | | methyl 5-ethyl-4-methyl-2-oxo-3,6-dioxabicyclo(3.1.0)hexane-1-carboxylate | | 6-dioxabicyclo(3.1.0)hexane-1-carboxylic acid,5-ethyl-4-methyl-2-oxo- methyl ester |
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