2-(N-(2-methyl-3-sulfanylpropanoyl)anilino)acetic acid

2-(N-aminoanilino)acetic acid

乙基2-(N-苄基苯胺基)乙酸酯

N-(氯乙酰基)-N-苯基-甘氨酸乙酯

(2-氧代-1-苯肼)乙酸