2-[[(2S)-2-acetamido-3-(1H-imidazol-5-yl)propanoyl]amino]acetic acid

(2S)-2-[[(2S)-2-acetamido-3-(1H-imidazol-5-yl)propanoyl]amino]-3-phenylpropanoic acid

乙烯酮

S-苯基硫代乙酸酯

2-acetyloxy-5-nitrobenzoic acid