gamma-羧基谷氨酸gamma,gamma-二-t-丁酯

N-苄氧羰基-(gamma,gamma'-二-叔丁基)-gamma-羧基谷氨酰甘氨酸乙酯

(3S)-3-[[(苯基甲氧基)羰基]氨基]-1,1,3-丙烷三羧酸 1,1-二叔丁酯

ethyl 4-ethylsulfanyl-2-methyl-4-oxobutanoate

ditert-butyl 2-prop-1-enylpropanedioate