1-氨基环戊烷-1-羧酸乙酯

1-[(2-chloroacetyl)amino]cyclopentane-1-carboxylic acid

1-[[2-(甲基氨基)乙酰基]氨基]-环戊烷羧酸

1-[(4-methylphenyl)sulfonylamino]cyclopentane-1-carboxylic acid

1-(carbamoylamino)cyclopentane-1-carboxylic acid