{[4-(甲基磺酰基)-2-硝基苯基]氨基}乙酸

2-(prop-2-enoxycarbonylamino)acetic acid

2-[(2-tritylsulfanylacetyl)amino]acetic acid

2-[[4-(2-cyclopropylethoxy)benzoyl]amino]acetic acid

2-(ethoxycarbonylcarbamothioylamino)acetic acid