tert-butyl 3-oxohex-4-enoate

tert-butyl 2-(6-methyl-5-oxopyrido[3,2-c][1,5]benzodiazepin-11-yl)acetate

3-(2-叔丁氧基-2-氧代乙基)-4-氧代哌啶-1-羧酸叔丁酯

(2R)-2-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]-5-phenylpentanoate

β-羟基异戊酸