3-乙酰基戊烷-1,3,5-三羧酸三乙酯

(5E)-5-羟基亚胺己酸

ethyl 2,6,6-trimethylcyclohex-2-ene-1-carboxylate

2-乙基-3-氧代丁酸

4-hydroxy-pentane-1,3,4-tricarboxylic acid