乙酰乙酸叔丁酯

乙酸异丙烯酯

tert-butyl 3-hydroxybutanoate

(R)-3-Hydroxy-4-((R)-toluene-4-sulfinyl)-butyric acid tert-butyl ester

(+)(R) tert-butyl 3-oxo-4-(p-tolylsulfinyl)butyrate