2,3,5-trimethyl-2,4-hexadiene

2-(2-氧代丙酰氨基)乙酸

(2S)-2-[[(2S)-2-[[(2S)-2-aminopropanoyl]amino]propanoyl]amino]-4-methylpentanoic acid

2-氧代-4-苯基-3-丁酸

3-cyano-2-hydroxy-2-methyl-3-phenyl-propionic acid