108248-73-3
2-cyano-3-methoxycarbonylmethyl-glutaric acid-1-ethyl ester-5-methyl ester
→
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dimethyl 3-(cyanomethyl)pentanedioate
1709-25-7
dimethyl 3-(cyanomethylidene)pentanedioate
57056-39-0
甲烷三乙酸